BY THE NUMBERS

4 Number of Prince Edward Islands that could fit inside the parts of Canada currently on fire. The Canadian Interagency Forest Fire Centre said Monday 2.2 million hectares of forest were on fire, mostly in Saskatchewan, Alberta and British Columbia.

50 Average interval, in minutes, between the eruption of new fires in B.C. On Saturday and Sunday alone, 57 new wildfires were reported.

1 Percentage of the population of Saskatchewan on the run from wildfires. About 13,000 of the province’s 1.1 million people are sleeping in hastily organized shelters, often with little more than a small suitcase and the clothes on their back.

1,400 Canadian soldiers deployed to fight fires in Saskatchewan. By comparison, the expedition sent to confront the Red River Rebellion in 1870 comprised only about 1,000 troops.

120 Firefighters streaming into Western Canada from across the continent.

800 Evacuees who received free tickets to attend Sunday’s Saskatchewan Roughriders game in Saskatoon. As of Sunday, Saskatoon was sheltering 1,179 evacuees from the province’s fire-ravaged north.

40 People who lost homes in Montreal Lake, Sask., on the weekend. “We lost our battle with Mother Nature,” said Chief Ed Henderson of Montreal Lake Cree Nation.

10+ The Metro Vancouver Air Quality Health Index for the resort town of Whistler, B.C., Monday afternoon — the highest possible rating on the scale.

575 Fires that have broken out in Saskatchewan in 2015, compared with 187 by this time last year.

60 Small fires that flared up in Surrey, B.C., in just 12 hours Sunday. Hot and dry conditions mean even the slightest spark can start a brush fire.

27,000 litres Water that can be carried by a Martin Mars water bomber. The iconic Second World War-era firefighting aircraft were grounded two years ago because of cost, but were reactivated Monday amid public outcry over the spreading fires.