Fig. 4From: Applicability and improvement of different potential evapotranspiration models in different climate zones of ChinaComparison of calculated and measured monthly PET (2001–2020) determined by 8 temperature-based models and Epan, respectively. Orange, green, blue, and purple line colors correspond to trend lines and PET scattered points in MPZ, SMZ, TCZ, and TMZ, respectively; the black line is the 1:1 lineBack to article page