Version History for Data Release: Yates, K.K., Moore, C.S., and Lemon, M.K., 2022, Time series of autonomous carbonate system parameter measurements in Middle Tampa Bay, Florida, USA (ver. 4.0, June 2022): U.S. Geological Survey data release, https://doi.org/10.5066/P9BAFC7L. ________________________________________________________ Version 1.0 posted online April 04, 2018 ________________________________________________________ Version 2.0 revised and reposted online August 01, 2019 Changes in version 2.0 1. Created the Middle-Tampa-Bay-OCSv2-02282018-to-12212018 data set using data collected between February and December 2018 (field activity 2018-374-FA). ________________________________________________________ Version 3.0 revised and reposted online March 11, 2021 Changes in version 3.0 1. Created Middle-Tampa-Bay-OCSv2-12152017-to-06232020 by appending data collected between December 2018 and June 2020 (field activity 2019-304-FA) to the Middle-Tampa-Bay-OCSv2-12152017-to-02282018 (version 1) and Middle-Tampa-Bay-OCSv2-02282018-to-12212018 (version 2) data sets. Consolidated data collected from December 2017 to June 2020 in Middle-Tampa-Bay-OCSv2-12152017-to-06232020. ________________________________________________________ Version 4.0 revised and reposted online June 07, 2022 Changes in version 4.0 1. Created Middle-Tampa-Bay-OCSv2-12152017-to-10152021 by appending data collected between June 2020 and October 2021 (Field activities 2019-318-FA, 2019-324-FA, 2019-327-FA, 2019-329-FA, 2019-336-FA, 2019-338-FA, 2019-339-FA, 2019-340-FA, 2019-345-FA, 2019-350-FA, 2019-369-FA, 2019-373-FA, 2020-304-FA, and 2020-309-FA) to the Middle-Tampa-Bay-OCSv2-12152017-to-02282018 (version 1), Middle-Tampa-Bay-OCSv2-02282018-to-12212018 (version 2), and Middle-Tampa-Bay-OCSv2-12152017-to-06232020 (version 3) data sets. Consolidated data collected from December 2017 to October 2021 in Middle-Tampa-Bay-OCSv2-12152017-to-10152021.