condition	mean	min	max
0 h after light	15.38155	15.1762	15.5869
4 h after light	16.22345	15.4674	16.9795
8 h after light	17.784100000000002	17.6827	17.8855
4 h after dark	20.7376	20.3147	21.1605
8 h after dark	18.72905	18.5672	18.8909
12 h after dark	15.08395	14.602	15.5659