condition	mean	min	max
4 h after light	6.02294	5.818230000000001	6.29845
8 h after light	5.88683	5.74125	6.09973
12 h after light	5.6860100000000005	5.49026	6.00317
4 h after dark	5.889313333333333	5.73032	6.07586
8 h after dark	5.7935533333333336	5.488569999999999	6.15329
12 h after dark	5.829096666666667	5.61395	6.01422