condition	mean	min	max
4 h after light	10.131055	8.40831	11.8538
8 h after light	12.535350000000001	11.8602	13.2105
12 h after light	15.0043	12.8868	17.1218
4 h after dark	16.73143333333333	16.4609	17.2256
8 h after dark	18.7357	16.9313	20.3942
12 h after dark	11.0196	10.6407	11.7665