condition	mean	min	max
4 h after light	18.15685	17.6167	18.697
8 h after light	13.66245	13.3449	13.98
12 h after light	31.137050000000002	30.6533	31.6208
4 h after dark	38.196650000000005	36.5311	39.8622
8 h after dark	39.17585	38.9235	39.4282
12 h after dark	30.7661	30.6379	30.8943