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Radar charts showing the comparison of the NS values between the original reference evapotranspiration and the calibrated reference evapotranspiration using the 15 empirical models in Bangladesh from 2006 to 2018. (a–l) represent the months from Jan to Dec, respectively. Note: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, and Dec are the abbreviations of January, February, March, May, June, July, August, September, October, November, and December, respectively.
