condition mean min max 4 h after light 6.222904333333333 4.06441 9.510734 8 h after light 6.4839063333333335 4.881519 9.101818 12 h after light 4.148036 3.2630209999999997 5.61904 16 h after light 9.227364000000001 6.169005 15.127120000000001 4 h after dark 6.355379666666667 4.647962000000001 7.589678999999999 8 h after dark 7.419362333333333 4.3226309999999994 10.25165