condition mean min max 4 h after light 5.987819999999999 5.2284 6.74724 8 h after light 5.46255 4.94483 5.98027 12 h after light 6.28095 6.02079 6.54111 4 h after dark 8.239103333333334 6.705 9.79648 8 h after dark 9.493946666666668 8.00894 10.4326 12 h after dark 6.729003333333334 5.42012 9.12235