condition mean min max 4 h after light 40.970065000000005 35.820416 46.119714 8 h after light 41.971632 38.682429 45.260835 12 h after light 48.4318145 47.707909 49.15572 4 h after dark 44.908368 42.773625 47.043111 8 h after dark 49.653343 47.090961 52.215725 12 h after dark 57.854281 57.854281 57.854281