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Table 2 Weather conditions and standard fire behavior parameters observed during the 9 prescribed burns conducted in spring of 2002 and 2003 in southern Alabama.

From: Comparing Techniques for Estimating Flame Temperature of Prescribed Fires

Trt Unit Date Total burn time (hrs) Max. temp (C) Average RH (%) Min. RH (%) Direction/wind speed (km/hr) Mean Rate of Spread (m/hr) Mean Flame Length (m) Mean Fire Zone Width (m) Mean Residence Time (min)
burn only          
6 4/17/2002 6 32 45.4 38 var / 8–10 62 1.1 .9 4.8
1 5/15/2002 12 29 30.0 25 NE / 5 63 .6 .4 3.1
11S 5/20/2002 7 25 31.0 27 NE / 5 37 .6 .6 4.0
11N 5/21/2002 9 26 28.8 26 N, NE / 5–13 47 .6 .4 3.9
thin and burn          
2 4/5/2002 17 19 32.4 21 N, NE/10-23 27 .5 .5 8.3
14 5/1/2002 6 32 53.5 31 S,SW/15–23 45 .7 .8 3.8
10 5/22/2002 11 27 31.6 25 E / 8 27 .6 .5 5.1
herbicide and burn          
4 4/15/2003 9 29 34.4 25.0 SE / 2–3 39 .7 .7 3.8
12 4/16/2003 10 29 38.1 29.0 S,SW / 3–5 57 1.6 .9 4.3
7 5/13/2003 8 29 31.5 22.0 NE / 8