condition mean min max 4 h after light 5.707856666666666 5.56635 5.80777 8 h after light 5.57909 5.52684 5.6626 12 h after light 5.99355 5.7946599999999995 6.22425 4 h after dark 5.8221533333333335 5.59558 6.10189 8 h after dark 5.468386666666667 5.35679 5.5738900000000005 12 h after dark 5.18999 5.10485 5.25629