Readme file for NCAR 4 Channel CIMS OH H2SO4 and MSA data
P.I.	Lee Mauldin
	NCAR/ACD
	1850 Table Mesa
	Boulder, CO   80303
	USA
	Phone: 303-497-1861
	e-mail: mauldin@ucar.edu

These data were obtained during the NSF PASE study Aug-Sept 2007. This
is a version 2.0 analysis of the data set. The data have been analyzed with
an altitude dependent calibration factor determined during the study.
A flow controller issue was discovered in flights 08-18 which reulted in 
the previously reported values being close to a factor of 2 too low.
Additionally a final caliration calculation raised all values by ~35% from
those previously reported. 

Data gaps are due to instrument calibrations and periods during wet
clouds. The remaining gaps are periods where the instrument was removed
from operation for service or an associated data parameter such as a
flow reading was deamed unacceptable. While a significant effort has
been made to remove noisy or bad data, there still may be a few
lingering points. If you have questions please contact the P.I. 

Date/Time format is mm/dd/yyyy hh:mm:ss and is UTC
All concentration units are molecule/cm-3