condition mean min max 4 h after light 11.429698 4.953814 15.19409 8 h after light 10.185811333333334 6.838866 15.193470000000001 12 h after light 10.841773333333334 10.25574 11.91427 16 h after light 15.01937 13.092030000000001 18.12654 4 h after dark 19.234003333333334 15.45302 26.47118 8 h after dark 11.079433333333332 9.55114 11.92042