condition	mean	min	max
4 h after light	19.7727635	18.669732	20.875795
8 h after light	20.713385000000002	19.356497	22.070273
12 h after light	17.633533	16.066472	19.200594
4 h after dark	18.674833	18.515684	18.833982
8 h after dark	18.593553999999997	18.353126	18.833982
12 h after dark	18.112676	18.112676	18.112676