condition mean min max 4 h after light 6.104222666666667 5.536065 7.155627000000001 8 h after light 11.598500333333334 8.275431 14.796560000000001 12 h after light 13.135433333333333 12.64434 13.59501 16 h after light 9.298914 5.1081080000000005 15.178989999999999 4 h after dark 20.6284 15.77085 26.6465 8 h after dark 8.059692666666667 5.299067 10.08104