condition mean min max 4 h after light 4.61751 4.6080000000000005 4.62396 8 h after light 4.7475933333333336 4.69369 4.82063 12 h after light 4.645243333333333 4.55644 4.81475 4 h after dark 4.70612 4.64364 4.82535 8 h after dark 4.628593333333333 4.59189 4.6493199999999995 12 h after dark 4.69019 4.5831800000000005 4.88209