condition	mean	min	max
4 h after light	17.527223499999998	14.989045	20.065402
8 h after light	18.496601	18.459761	18.533441
12 h after light	16.9556035	13.892141	20.019066
4 h after dark	16.569055499999997	14.521773	18.616338
8 h after dark	16.045703500000002	15.934617	16.15679
12 h after dark	20.760779	20.760779	20.760779