condition	mean	min	max
4 h after light	6.513156666666667	6.08791	6.771160000000001
8 h after light	6.705956666666666	6.3434099999999995	6.89704
12 h after light	6.80811	6.5972100000000005	7.01691
4 h after dark	7.070953333333334	6.9577800000000005	7.279610000000001
8 h after dark	7.0395	6.92898	7.1139600000000005
12 h after dark	7.225793333333334	7.1685	7.3063199999999995