condition	mean	min	max
4 h after light	15.87285	13.7246	18.0211
8 h after light	17.911749999999998	16.7394	19.0841
12 h after light	18.17305	18.0161	18.33
4 h after dark	17.127866666666666	15.9317	18.2643
8 h after dark	19.9299	18.1026	21.6619
12 h after dark	18.8582	16.3422	20.5396