condition	mean	min	max
4 h after light	15.686674499999999	15.533987	15.839362
8 h after light	14.101245	12.961066	15.241424
12 h after light	15.651446499999999	15.359069	15.943824
4 h after dark	14.4425655	14.264251	14.62088
8 h after dark	15.557673	14.984206	16.13114
12 h after dark	15.533987	15.533987	15.533987