condition mean min max 4 h after light 5.164745 4.03638 6.29311 8 h after light 6.1696349999999995 5.29486 7.04441 12 h after light 5.858169999999999 4.9801 6.73624 4 h after dark 7.385149999999999 5.98635 8.87417 8 h after dark 8.563293333333334 7.29096 10.4633 12 h after dark 8.052973333333334 7.17731 9.26543