condition	mean	min	max
4 h after light	19.464799499999998	17.824329	21.10527
8 h after light	18.170724	17.435972	18.905476
12 h after light	16.3092535	14.546434	18.072073
4 h after dark	18.5645545	16.468447	20.660662
8 h after dark	19.4266055	18.072073	20.781138
12 h after dark	15.663284	15.663284	15.663284