Fig. A.1

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Left panel: Annual cherry blossom flowering dates given as a day of the year (DoY) in Kyoto (blue dots) and Edo bay (red dots) (Aono & Kazui, 2008; Aono, 2015). The blue and red squares denote 15-year averages for Kyoto and Edo bay, respectively, and the lines indicate linear trends of the flowering dates. Right panel: The red squares indicate differences of 15-year averaged reconstructed March temperatures between Kyoto and Edo bay as a function of the time (red squares). The blue symbols are differences of thermometer measured temperatures smoothed by a 31-year linear regression from 1890 to 1990.
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