condition	mean	min	max
4 h after light	6.011816666666666	5.87372	6.27969
8 h after light	5.96071	5.73899	6.17863
12 h after light	5.922676666666667	5.70859	6.2102900000000005
4 h after dark	5.983086666666666	5.8663099999999995	6.0774099999999995
8 h after dark	5.865953333333334	5.57048	6.02933
12 h after dark	6.025	5.87277	6.14077