condition	mean	min	max
4 h after light	8.555975	8.07342	9.03853
8 h after light	6.6103950000000005	6.40622	6.81457
12 h after light	6.7023150000000005	6.40641	6.99822
4 h after dark	7.547153333333333	6.85009	7.99335
8 h after dark	7.772966666666667	6.80373	8.30192
12 h after dark	7.46649	7.04577	7.79686