condition mean min max 4 h after light 8.745944333333334 5.1408830000000005 10.98821 8 h after light 2.278062333333333 1.563015 2.646309 12 h after light 7.608465 4.903922000000001 9.038687 16 h after light 8.720632333333334 7.025117 11.77068 4 h after dark 12.24851 10.69794 14.711689999999999 8 h after dark 5.879902666666666 4.381512 8.138194