condition mean min max 4 h after light 6.105515 3.97546 8.23557 8 h after light 6.025195 5.77077 6.27962 12 h after light 9.48388 9.0566 9.91116 4 h after dark 10.261344999999999 8.20219 12.3205 8 h after dark 9.51153 8.79716 10.2259 12 h after dark 7.2025250000000005 6.23718 8.16787