SGP/AOS/C1 - Ozone Instrument removed for repair
The ozone instrument was removed for calibration on 2003 11/21. It was shipped to Boulder and was cleaned and calibrated. It was sent back to SGP on 2003 12/02, but was damaged in transit by FedEx. The instrument was reinstalled on 2003 12/03 but was found to be defective. Large spikes were observed in the data. Afetr a few days the instrument was removed and shipped to a vendor for repair. The ozone monitor was returned to service after repair at 2004 01/27 (2208 GMT).
Do not use ozone data from this period.