From: Systematic review and meta-analysis of fire regime research in ponderosa pine (Pinus ponderosa) ecosystems, Colorado, USA
Fire return interval (yr)
Group
n
Minimum
Maximum
Mean
Median
SE
All sites
78
3
66
21
19
1.4
<2400 m
24
40
15
14
1.6
>2400 m
54
6
22
1.8