condition	mean	min	max
4 h after light	12.145150000000001	12.062	12.2283
8 h after light	15.11365	15.0302	15.1971
12 h after light	16.1478	15.0558	17.2398
4 h after dark	18.25295	17.8498	18.6561
8 h after dark	18.18075	17.9447	18.4168
12 h after dark	15.5983	15.3433	15.8533