SGP/PGS/C1 - Incorrect 60m Data

Precise Gas system (PGS) data at 60m (channel 4) are incorrect. This problem is due to a 
freezing rain and ice storm that hit SGP Central facility on January 5, 2005. The 60m 
tower inlet was clogged with ice and consequently, no air was supplied to the PGS instrument.

Users should discard 60m data over the specified time period using “channel” variable 

(channel=4).

• co2ppm
• co2mv
• pres_ctrlr
• co2mv_slope_pval
• flow_rate
• pres4
• co2mv_slope
• co2mv_slope_se
• co2mv_se
• co2ppm_se