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Number of prefectures against temperature for XT{A}(Temp), XT{M}(Temp), and XT{m}(Temp). (a) Number of prefectures against temperature for maximum value of XT{A}(Temp), (a′) number of prefectures against temperature for maximum value of XT{M}(Temp), (b) number of prefectures against temperature for inflection point or minimum value of XT{A}(Temp), and (b′) number of prefectures against temperature for inflection point or minimum value of XT{m}(Temp).
