condition	mean	min	max
4 h after light	16.1985125	15.857699	16.539326
8 h after light	17.1632975	15.179592	19.147003
12 h after light	21.4039085	20.876925	21.930892
4 h after dark	20.092879500000002	19.652413	20.533346
8 h after dark	19.5730535	18.272829	20.873278
12 h after dark	18.112676	18.112676	18.112676