JAXA:
12232,2017,02,28,1209513600,2151409
12233,2017,03,01,1209600000,2147345
12234,2017,03,02,1209686400,2149610
12235,2017,03,03,1209772800,2159375
12236,2017,03,04,1209859200,2168927
12237,2017,03,05,1209945600,2187029
only 40k above minimum but given: how late in season, usual smoothness of SH and 4 consecutive days of gains, I think we can call the minimum was 1st March.