This instrument will be recalibrated with zero air regularly (resulting in small baseline jumps) to 
minimize the occurence of negative data points.  

zeroed: 16:02 local time 7/31/11
	19:34 local time 8/5/11
	19:44 local time 8/10/11
	13:50 local time 8/11/11
	11:15 local time 8/12/11 (24 hours)
	14:43 local time 8/17/11 (24 hours)
		
Contact Julie Fry or Danielle Draper with any questions.  
fry@reed.edu
draper.danielle@gmail.com