We thank Ned Guttman for his advice on the development of methods. This material is based upon work supported by the Office of Global Programs, National Oceanic and Atmospheric Administration (NOAA) under Award NA16GP1498. Additional support was provided by NOAA Cooperative Agreement NA17RJ1222. Partial support for David Easterling was provided by the Office of Biological and Environmental Research, U.S. Department of Energy (DOE). Any opinions, findings, and conclusions are those of the authors and do not necessarily reflect the views of NOAA or the Illinois State Water Survey.
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