The calibrated irradiances were calculated from the raw measurements using the appropriate calibration file as discussed in the format document. 

The remaining processing that was done to the data was as follows:

• saturated irradiances were removed from the data set
• data from approximately 1720 PST on May 13 1997 (day 133) until the end of the data set for the first deployment in 1997 (May 15 1997, day 135) appeared unreliable and were removed.
• data from between the start of the first deployment and day 60 in the Ed670 and Ed683 data sets appeared unreliable and were removed (the data indicated zero irradiance at these wavelengths in this period).
• one anomalous data point on day 140 1997 (at 8:33 am local time) was removed
• data were removed from between day 260 1997 (September 17) until the end of the second deployment in 1997 because of indications of biofouling (the shorter wavelength irradiances showed a sharp decrease, while the longer wavelength irradiances (Ed670 and Ed683) showed an increase).
• pre- and post-deployment data were removed from the start and end of the sixth deployment data set.  Timestamps in this data set were corrected by adding 6 days and 2.2 hours to the timestamps (see the document that accompanies the data). 

These data processing notes are also found in the documents that accompany the data.

Biofouling on the casing of  the OCI-200 sensor head datalogger after 6 months deployment (Nov 1998).

Webpage  by Jasmine S. Bartlett, Oregon State University.