condition mean min max 4 h after light 12.05462 11.909180000000001 12.16258 8 h after light 12.092113333333334 11.9948 12.17683 12 h after light 12.057030000000001 11.87076 12.22123 4 h after dark 12.177166666666666 12.00433 12.387360000000001 8 h after dark 12.22939 12.09957 12.353489999999999 12 h after dark 12.142023333333334 11.92747 12.29354