condition	mean	min	max
4 h after light	7.539345	6.87651	8.20218
8 h after light	11.790325	9.85735	13.7233
12 h after light	17.067135	9.53827	24.596
4 h after dark	23.40585	21.8215	24.9902
8 h after dark	23.02735	20.512	25.5427
12 h after dark	20.336550000000003	15.8473	24.8258