condition	mean	min	max
4 h after light	7.684381999999999	7.437372	7.931392
8 h after light	7.9959585	7.459089	8.532828
12 h after light	7.255999	7.196345	7.315653
4 h after dark	7.4124255	7.166248	7.658603
8 h after dark	7.16657	7.054492	7.278648
12 h after dark	7.965899	7.965899	7.965899