How to Use This Page

This page allows you to download NAPS data files which contain the continuous hourly and 24 hour integrated contaminant concentration data for air quality across Canada. Clicking the 'Download All Package Contents (.zip)' link will download all files inside a grouping as a zip archive file.

NAPS Network Information (Files: 6)

Description: National Air Pollution Surveillance Program (NAPS) Information such as Sampling Schedule for VOC, PAH and PM, Station information, Pollutant codes,Google Earth viewable file for stations, Data_Version_dates.

What's New? / Quoi de neuf? (Files: 4)
2016 (Files: 6)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide, Nitrogen oxides, Nitrogen oxide, Particulate Matter 2.5 and 10 micron.

Annual Summaries 2016 (Files: 0)
2015 (Files: 22)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide, Nitrogen oxides, Nitrogen oxide, Particulate Matter 2.5 and 10 micron.

Annual Summaries 2015 (Files: 10)
2014 (Files: 21)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide, Nitrogen oxides, Nitrogen oxide, Particulate Matter 2.5 and 10 micron.

Annual Summaries 2014 (Files: 10)
2013 (Files: 22)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide, Nitrogen oxides, Nitrogen oxide, Particulate Matter 2.5 and 10 micron.

Annual Summaries 2013 (Files: 10)
2012 (Files: 22)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 2012 (Files: 10)
2011 (Files: 22)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 2011 (Files: 16)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

2010 (Files: 20)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Dioxin-like Poly chorinated byphenyls (PCB)s, Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2010 (Files: 16)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

2009 (Files: 22)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Dioxin-like Poly chorinated byphenyls (PCB)s, Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2009 (Files: 14)
2008 (Files: 22)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Dioxin-like Poly chorinated byphenyls (PCB)s, Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2008 (Files: 16)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

2007 (Files: 21)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Dioxin-like Poly chorinated byphenyls (PCB)s, Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2007 (Files: 13)
2006 (Files: 21)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Dioxin-like Poly chorinated byphenyls (PCB)s, Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2006 (Files: 13)
2005 (Files: 20)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Dioxin-like Poly chorinated byphenyls (PCB)s, Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2005 (Files: 12)
2004 (Files: 18)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide,Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2004 (Files: 11)
2003 (Files: 18)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2003 (Files: 11)
2002 (Files: 17)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2002 (Files: 11)
2001 (Files: 16)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2001 (Files: 10)
2000 (Files: 15)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 2000 (Files: 9)
1999 (Files: 14)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 1999 (Files: 9)
1998 (Files: 15)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 1998 (Files: 9)
1997 (Files: 14)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Means Summaries 1997 (Files: 9)
1996 (Files: 14)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 1996 (Files: 9)
1995 (Files: 13)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 1995 (Files: 9)
1994 (Files: 12)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 1994 (Files: 7)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

1993 (Files: 12)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 1993 (Files: 7)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

1992 (Files: 12)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins. Additional chemical groups analyzed are Octochlorostyrene (OC), Pentachlorophenol (PCP), and Hexachlorobenzene (HCB).

Annual Summaries 1992 (Files: 7)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

1991 (Files: 11)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 1991 (Files: 7)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

1990 (Files: 11)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 1990 (Files: 7)

Description: Annual Means for 1HR, 8HR, 24HR averaging times: Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5

1989 (Files: 11)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals, volatile organics such as benzene and formaldehyde as well as semi volatile organic compounds such as polycyclic aromatic hydrocarbons, and polychlorinated dibenzo-p-dioxins.

Annual Summaries 1989 to 1974 (Files: 16)
1988 (Files: 8)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals

1987 (Files: 8)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals.

1986 (Files: 8)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals.

1985 (Files: 8)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals.

1984 (Files: 8)

Description: Criteria Air Pollutants and Trace Contaminants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide, Particulate Matter 2.5 and 10 micron, Categories of species sampled include fine particulates and metals.

1983 (Files: 7)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide.

1982 (Files: 7)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide

1981 (Files: 7)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide,

1980 (Files: 7)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen oxides, Nitrogen dioxide, Nitrogen oxide,

1979 (Files: 5)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Nitrogen dioxide, Carbon Monoxide

1978 (Files: 5)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide,

1977 (Files: 5)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide

1976 (Files: 0)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide

1975 (Files: 5)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide

1974 (Files: 5)

Description: Criteria Air Pollutants measured by National Air Pollution Surveillance Program: Ozone, Sulphur dioxide, Carbon monoxide, Nitrogen dioxide

Find Out More About NAPS Monitoring Data Download Formats

.hly files can be opened in any text editor program. If you wish to convert the file into Microsoft Excel you can use the following field lengths to import the file:

description length of field start end
pollutant code 3 1 3
station (NAPS id) 6 4 9
Year 4 10 13
Month 2 14 15
Day 2 16 17
average for day 4 18 21
minimum for day 4 22 25
maximum for day 4 26 29
hourly reading 1 4 30 33
hourly reading 2 4 34 37
hourly reading 3 4 38 41
hourly reading 4 4 42 45
hourly reading 5 4 46 49
hourly reading 6 4 50 53
hourly reading 7 4 54 57
hourly reading 8 4 58 61
hourly reading 9 4 62 65
hourly reading 10 4 66 69
hourly reading 11 4 70 73
hourly reading 12 4 74 77
hourly reading 13 4 78 81
hourly reading 14 4 82 85
hourly reading 15 4 86 89
hourly reading 16 4 90 93
hourly reading 17 4 94 97
hourly reading 18 4 98 101
hourly reading 19 4 102 105
hourly reading 20 4 106 109
hourly reading 21 4 110 113
hourly reading 22 4 114 117
hourly reading 23 4 118 121
hourly reading 24 4 122 125