condition mean min max 4 h after light 5.614373333333334 5.45948 5.74181 8 h after light 5.60624 5.54659 5.63847 12 h after light 5.505213333333334 5.39785 5.5877 4 h after dark 5.6116600000000005 5.59417 5.64313 8 h after dark 5.464906666666666 5.239269999999999 5.717969999999999 12 h after dark 5.4585799999999995 5.2686 5.59917