condition	mean	min	max
4 h after light	19.25075	17.622	20.8795
8 h after light	12.936900000000001	12.5868	13.287
12 h after light	15.7409	14.7001	16.7817
4 h after dark	19.8443	17.6174	22.0712
8 h after dark	22.111800000000002	21.5825	22.6411
12 h after dark	23.47535	23.2117	23.739