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Table 2 Maximum, median, and minimum fuel moisture and wind speed conditions during acceptable fire windows in five half-season periods (dates listed in Table 3) from 2003 to 2015 across the Bismarck and Grand Forks fire weather zones that cover North Dakota and Minnesota, USA (Fig. 1)

From: Seasonality of prescribed fire weather windows and predicted fire behavior in the northern Great Plains, USA

Half-season

Wind speed (km h−1)

Fuel moisture (%)

low

median

high

low

median

high

Early spring

7

14

22

8

11

20

Late spring

7

14

22

9

12

20

Early summer

7

14

18

7

11

18

Late summer

7

14

18

8

11

17

Early fall

7

14

18

9

12

19