condition	mean	min	max
4 h after light	76.78385	72.732	80.8357
8 h after light	37.07105	36.4454	37.6967
12 h after light	16.8847	15.9687	17.8007
4 h after dark	17.1172	16.0776	18.1568
8 h after dark	18.74075	18.6828	18.7987
12 h after dark	32.072449999999996	31.38	32.7649