The data processing was performed using either READ.exe (003884LE) (data from Feb 1998 - Apr 2004) or software for Profiler version 1.4.4 (data from May 2004 onwards).  Both are Biospherical Instruments Inc. programs that converts the raw binary data to calibrated ASCII data using the available calibration data. Note that the measured dark values were not used to process this data; instead the calibration dark values were used.

Each ASCII data file contains a header specific for SeaBASS requirements.  This header contains detailed information regarding the contents of the data file.   Further information regarding the data sets is contained in the README file.

After the header (about 43 lines), the data is formatted in 26 or 28 tab-delimited columns, in the following order:

1. Ed412 (uW/cm²/nm)
2. Ed443 (uW/cm²/nm)
3. Ed490 (uW/cm²/nm)
4. Ed510 (uW/cm²/nm)
5. Ed555 (uW/cm²/nm)
6. Ed665 (uW/cm²/nm)
7. EdPAR (uE/cm²/s)
8. EdGND (volts)
9. water temperature (°C)
10. depth (m)
11. LuChl (nE/m²/sr/s)
12. Lu412 (uW/cm²/nm/sr)
13. Lu443 (uW/cm²/nm/sr)
14. Lu490 (uW/cm²/nm/sr)
15. Lu510 (uW/cm²/nm/sr)
16. Lu555 (uW/cm²/nm/sr)
17. Lu665 (uW/cm²/nm/sr)
18. LuGND (volts)
19. Es412 (uW/cm²/nm)
20. Es443 (uW/cm²/nm)
21. Es490 (uW/cm²/nm)
22. Es510 (uW/cm²/nm)
23. Es555 (uW/cm²/nm)
24. Es665 (uW/cm²/nm)
25. EsPAR (uE/cm²/s)
26. EsGND (volts)
27. tilt (degrees)  [from Sep 1998 onwards]
28. roll (degrees)  [from Sep 1998 onwards]

Each data file contains a continuous set of measurements including dark values, downcast data and upcast data.  The Ed and Lu data are downwelling irradiance and upwelling radiance measurements made by the PRR600 (profiler), and the Es data are the downwelling irradiance measurements made simultaneously at the surface by the PRR610 (reference).  Note that the tilt and roll values have a range of +/- 40^o, and that desirable tilt and roll values are in the range +/- 5^o.

Calibrations of the PRR sensors are made by Biospherical Instruments Inc.  The current calibration files available are:
Feb 98: 9665_7.CL3  (used to process Feb-Oct 98 data)
Sep 98: 9665_6.CL3 (used to process Sep 98 - Feb 99 data)
Mar 99: 9665_6b.CL3 (used to process Mar 99 - Oct 99 data)
Nov 99: 96651199.CL3 (used to process Dec 99 - Jul 01 data)
Aug 01: 96650801.CL3 (used to process Aug 01 - Apr 04 data)
May 04: 96650504.txt (used to process May 04 data onwards)
Aug 05: 96650705.CL3 (used to process Aug 05 data onwards)
Sep 07: 96650907.CL3 (used to process Sep 07 data onwards)
(To download these files using Netscape (PC or UNIX), hold the shift key while you click.  For Netscape (Mac), hold down the mouse button and choose "Save this Link as ...".  For Internet Explorer, click with the right mouse button and choose "Save Target As ...".).

Webpage by Jasmine S. Nahorniak, Oregon State University.