condition	mean	min	max
4 h after light	12.3248	11.1387	13.59
8 h after light	13.8495	3.3039	23.0118
12 h after light	15.208406666666667	9.76192	21.1587
4 h after dark	19.357433333333333	14.5207	22.5924
8 h after dark	20.345	17.8582	21.9335
12 h after dark	17.2456	16.1205	18.0987