condition mean min max 2 h after light 56.78391666666667 40.0738 70.5264 6 h after light 51.07025 36.0965 61.6357 10 h after light 42.24871666666667 32.5018 55.3493 14 h after light 47.159800000000004 27.6352 62.7233 18 h after light 50.07163333333333 32.4692 64.9622 2 h after dark 59.6771 47.3101 72.7671