condition	mean	min	max
4 h after light	8.193966666666666	7.990710000000001	8.339789999999999
8 h after light	8.176689999999999	8.041039999999999	8.25582
12 h after light	8.32587	8.18661	8.47221
4 h after dark	8.38669	8.30143	8.45872
8 h after dark	8.251803333333333	8.0938	8.43253
12 h after dark	8.301353333333333	8.20904	8.4249