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2025 Dose Data from the Fixed Point Surveillance Network

The Fixed Point Surveillance (FPS) network monitors public radiation dose due to radioactive materials in the atmosphere. The FPS network is used primarily to measure the external dose from three noble gases in particular; Argon-41, Xenon-133 and Xenon-135, as well as the total combined external dose from all sources, measured as Total Air KERMA.

For all of the tables on this page, the following definitions apply:

nGy (nanoGray)
A Gray (Gy) is a standard unit of measurement for radiation dose, defined as 1 Joule of energy deposited per kilogram of matter. A nanoGray (nGy) is 1x10 -6 milliSieverts (mSv) and it is a much more common unit of measure for these types of very low doses.
KERMA (Kinetic Energy Released in Matter)
In this case the 'Total Air KERMA' refers to the radiation dose from all external gamma sources, not just from the three noble gases Argon-41, Xenon-133 and Xenon-135. This includes natural background radiation as well, such as from mineral deposits in the ground or radon gas in the air.
- (hyphen)
The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit. The minimum detectable dose for the three noble gases being monitored are...
  • 6 nGy/month for Argon-41
  • 3 nGy/month for Xenon-133
  • 3 nGy/month for Xenon-135

These detection limits are well below the acceptable public dose limit of 1 mSv/year as published by the Canadian Nuclear Safety Commission in their Radiation Protection Regulations.

x
The dose data for this month was not collected due to a problem with the equipment or data transfer.
Blank cell
The dose data for this month has not been collected yet.

The tables below show the most recent dose data available from the FPS network. Data is normally updated quarterly. (Last update: May 27th , 2025)

Gentilly system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
La Prade Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 19275 16276 19823 x x x x x x x x x
Port Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 8750 6962 7936 x x x x x x x x x
Victoriaville Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 16929 13033 18073 x x x x x x x x x
Trois Rivières Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 12281 9297 10985 x x x x x x x x x
Québec City Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 9374 7768 9178 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Bruce system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Site
Boundary		 Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 11400 6197 11467 x x x x x x x x x
Scott Point Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x
Kincardine Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 10992 15163 10938 x x x x x x x x x
Inverhuron Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x
Port Elgin Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 10938 6964 10794 x x x x x x x x x
Infocentre Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 19698 12480 19987 x x x x x x x x x
Tiverton Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 14479 8511 14648 x x x x x x x x x
Shore Road Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Greater Toronto Area/Lake Ontario system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Scarborough Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 12131 10184 11891 x x x x x x x x x
Bowmanville Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 30068 21215 28444 x x x x x x x x x
Mississauga Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 12296 9950 12093 x x x x x x x x x
Toronto Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 12244 9782 11886 x x x x x x x x x
Pickering Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15742 12326 15027 x x x x x x x x x
Oshawa Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 13097 10454 12713 x x x x x x x x x
Markham Argon-41 x x - x x x x x x x x x
Xenon-133 x x - x x x x x x x x x
Xenon-135 x x - x x x x x x x x x
Total Air
KERMA		 x x 14741 x x x x x x x x x
Ajax Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21653 16496 20152 x x x x x x x x x
Port Hope Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18906 15025 18653 x x x x x x x x x
Hamilton Argon-41 1186 1090 1198 x x x x x x x x x
Xenon-133 12 5 7 x x x x x x x x x
Xenon-135 19 8 12 x x x x x x x x x
Total Air
KERMA		 18089 15375 19186 x x x x x x x x x
Kingston ON Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x
St. Catharines Argon-41 - x - x x x x x x x x x
Xenon-133 - x - x x x x x x x x x
Xenon-135 - x - x x x x x x x x x
Total Air
KERMA		 11161 x 8053 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Darlington perimeter system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Blue Circle Cement Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18521 14000 17837 x x x x x x x x x
Bowmanville Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 19763 14970 19187 x x x x x x x x x
Energy Drive East Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21423 14201 18355 x x x x x x x x x
Crago Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21048 14927 19210 x x x x x x x x x
Osborne Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21300 15564 20160 x x x x x x x x x
Courtice Treatment Plant Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21113 17529 20496 x x x x x x x x x
Holt Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21278 15375 19607 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Pickering perimeter system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Montgomery Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 19334 14414 17515 x x x x x x x x x
Kinsmen Park Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 19651 14407 17975 x x x x x x x x x
Liverpool Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 17905 13364 16423 x x x x x x x x x
East Boundary Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 25153 18079 22993 x x x x x x x x x
Central Maintenance Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15947 12150 15500 x x x x x x x x x
Beachpoint Promenade Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18700 14065 17472 x x x x x x x x x
CMS Storage Yard Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15282 13404 14264 x x x x x x x x x
Alex Robertson Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 24106 16866 20824 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Ottawa Valley system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Chapeau Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 16941 12013 13091 x x x x x x x x x
Chalk River Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 29507 24461 29592 x x x x x x x x x
Deep River Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 29278 23486 25876 x x x x x x x x x
Ottawa Argon-41 - - x x x x x x x x x x
Xenon-133 - - x x x x x x x x x x
Xenon-135 - - x x x x x x x x x x
Total Air
KERMA		 14224 10338 x x x x x x x x x x
Petawawa Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 23916 17895 22814 x x x x x x x x x
Sheenboro Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 20773 15602 20076 x x x x x x x x x
Westmeath Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Regional system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Amherstburg Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18448 15962 18612 x x x x x x x x x
Vancouver Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x
Yellowknife Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 19846 16867 17674 x x x x x x x x x
Regina Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 16115 15120 16725 x x x x x x x x x
Calgary Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 13342 11813 12818 x x x x x x x x x
Winnipeg Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 14071 12644 13889 x x x x x x x x x
Thunder Bay Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 16053 14102 15627 x x x x x x x x x
Montréal Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 12746 10506 12836 x x x x x x x x x
Charlottetown Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15285 12603 15292 x x x x x x x x x
St. John's Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 23772 20083 23465 x x x x x x x x x
Whitehorse Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 20659 19062 20006 x x x x x x x x x
Iqaluit Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18778 14631 14454 x x x x x x x x x
Resolute Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 7805 6997 7211 x x x x x x x x x
Haida Gwaii Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15035 14100 15053 x x x x x x x x x
Saskatoon Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 20973 19341 22923 x x x x x x x x x
Kelowna Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 33679 30160 32587 x x x x x x x x x
Fredericton Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 36411 30428 36030 x x x x x x x x x
Edmonton Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 17417 15834 17834 x x x x x x x x x
Edmundston Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 14366 11570 13491 x x x x x x x x x
Sherbrooke Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15826 10166 13908 x x x x x x x x x
Cambridge Bay Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21790 17956 18662 x x x x x x x x x
London Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 15280 11088 16275 x x x x x x x x x
Sudbury Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 34016 29982 33699 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Point Lepreau system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Lighthouse Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 24060 17061 24000 x x x x x x x x x
Digby Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 29220 25538 29575 x x x x x x x x x
Dipper Harbour Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x
Emergency Centre Argon-41 x x x x x x x x x x x x
Xenon-133 x x x x x x x x x x x x
Xenon-135 x x x x x x x x x x x x
Total Air
KERMA		 x x x x x x x x x x x x
Saint John Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 23758 20276 23953 x x x x x x x x x
Welch Cove Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18706 13477 17320 x x x x x x x x x
Kingston NS Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 18598 14410 19026 x x x x x x x x x
Off-Site Emergency Operations Centre Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 34547 21641 34366 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Vancouver Island system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Saanich Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 13618 12348 13365 x x x x x x x x x
Metchosin Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 20887 19041 20827 x x x x x x x x x
Victoria Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 8570 7899 8419 x x x x x x x x x
Nanaimo Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 13946 12453 13752 x x x x x x x x x
Sidney Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 11384 10283 11017 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.
Halifax system - 2025
Dose Data (nGy/month)
Station Nuclide Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
West Street Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 25863 21696 25747 x x x x x x x x x
Dartmouth Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 21476 16796 21242 x x x x x x x x x
Cole Harbour Road Argon-41 - - - x x x x x x x x x
Xenon-133 - - - x x x x x x x x x
Xenon-135 - - - x x x x x x x x x
Total Air
KERMA		 20030 15433 19869 x x x x x x x x x

- (hyphen): The system has a limit on the amount of low-level radiation it can reliably detect and use to calculate a monthly dose and the hyphens represent any data which falls below this detection limit.

x: The dose data for this month was not collected due to a problem with the equipment or data transfer.

Blank cell: The dose data for this month has not been collected yet.

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