condition	mean	min	max
4 h after light	8.259126666666667	7.9078800000000005	8.45673
8 h after light	8.36943	8.13241	8.56289
12 h after light	8.44355	8.25695	8.58207
4 h after dark	8.45319	8.20753	8.613389999999999
8 h after dark	8.530836666666668	8.28617	8.673210000000001
12 h after dark	8.597686666666666	8.48052	8.7499