condition	mean	min	max
0 h after light	18.98785	18.9455	19.0302
4 h after light	14.682949999999998	12.9902	16.3757
8 h after light	12.56595	10.9611	14.1708
4 h after dark	16.044800000000002	15.9132	16.1764
8 h after dark	18.117	16.3079	19.9261
12 h after dark	17.6158	16.9202	18.3114