condition mean min max 4 h after light 7.625865 6.90152 8.35021 8 h after light 6.823905 6.74957 6.89824 12 h after light 3.2078499999999996 2.62491 3.79079 4 h after dark 4.361963333333334 3.17526 6.02095 8 h after dark 6.040843333333333 4.39586 6.99621 12 h after dark 4.6028 1.42738 7.57629