2 4 6 8 10 12 14 



Mine temperature (C): Jan-Apr 



50 60 70 80 90 



Mine relative humidity (%): Jan-Apr 



Figure 3. Winter (Jan-Apr) and summer (Jun-.Iul ) mine ambient temperature (top: Y = 0.608X + 4.874. R- 

 = 0.823) and relative humidit>- (bottom: Y = 0.657X + 36.201 , R- = 0.792) are highly correlated (P < 

 0.00 1 ) in southwestern Montana. Points represent individual datalogger locations, using the data from Table 

 2. Dashed line is the 95% confidence inter\al. 



