condition mean min max 0 h after light 6.6228750000000005 6.57893 6.66682 2 h after light 9.096905 8.73236 9.46145 4 h after light 5.122045 4.79824 5.44585 8 h after light 8.30312 8.03257 8.57367 12 h after light 9.302575 8.56135 10.0438 2 h after dark 14.1763 11.1936 17.159 4 h after dark 14.362400000000001 11.6376 17.0872 8 h after dark 10.91911 9.34052 12.4977 12 h after dark 9.871759999999998 9.19212 10.5514