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dir.4.5m: ok, see comments of dir.10m
w.4.5m: ok, before midnight: stns 1 & 2 less descent (-0.02 m/s) than stns 3 & 4 (-0.06, -0.004 04 m/s)
after midnight-sunrise, stn 3 & 4 have w<0 of around -0.1 m/s
morning before rain stn 4 close to stns 1 & 2 (-0.05 m/s), stn 3 has w~-0.10 m/s
afternoon (after rain) stn 2 slightly positive , stns 1 & 4 ~ 0, stn 3 w~-0.12 m/s
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