condition mean min max 4 h after light 7.634092000000001 7.502748 7.765436 8 h after light 8.216624 7.478831 8.954417 12 h after light 9.917447500000002 9.69363 10.141265 4 h after dark 8.3479875 7.605746 9.090229 8 h after dark 10.4505215 8.98791 11.913133 12 h after dark 8.801912 8.801912 8.801912