Version history for: 
CTD profiles and discrete water-column measurements collected off California and Oregon during NOAA cruise SH-18-12 (USGS field activity 2018-663-FA) from October to November 2018

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Version 1 posted online July 2, 2020.

Original citation:
Prouty, N.G., and Baker, M.C., 2020, CTD profiles and discrete water-column measurements collected off California and Oregon during NOAA cruise SH-18-12 (USGS field activity 2018-663-FA) from October to November 2018: U.S. Geological Survey data release, https://doi.org/10.5066/P99DIQZ5.
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Version 2 revised and posted online June 26, 2020.

Changes in version 2.0:

Several latitude and longitude values in the water-column environmental variable data file (SH-18-12_BTL_CTD_v.2.0_data.csv) were updated from 42.8976/-124.8474 to 41.8975/-124.8473. No data values were changed, nor were any changes made in the CTD profile measurement data file (SH-18-12_raw_CTD.zip). Version 1 file for SH-18-12_BTL_CTD_v.2.0_data.csv is archived and only available upon request.


Version 2 citation:
Prouty, N.G., and Baker, M.C., 2020, CTD profiles and discrete water-column measurements collected off California and Oregon during NOAA cruise SH-18-12 (USGS field activity 2018-663-FA) from October to November 2018 (ver. 2.0, September 2021): U.S. Geological Survey data release, https://doi.org/10.5066/P99DIQZ5.
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Version 3 revised and posted online July 13, 2022

Changes in version 3.0:

An attribute column header in the water-column environmental variable data file (SH-18-12_BTL_CTD_v.2.0_data.csv) was revised to accurately report ammonium not ammonia. No data values were changed, nor were any changes made in the CTD data (SH-18-12_raw_CTD.zip). Metadata files for both data files were revised to reflect the new doi number, URLs, download links, and PIDs. Version 2 of the data release is still available online at the original doi link for reference purposes only.

Version 3 citation:
Prouty, N.G., and Baker, M.C., 2020, CTD profiles and discrete water-column measurements collected off California and Oregon during NOAA cruise SH-18-12 (USGS field activity 2018-663-FA) from October to November 2018 (ver. 3.0, July 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P99MJ096.