condition mean min max 0 h after light 1.58398 1.39581 1.77215 4 h after light 2.67409 2.38314 2.96504 8 h after light 2.568705 2.51363 2.62378 4 h after dark 2.677225 2.1697 3.18475 8 h after dark 2.21202 1.50367 2.92037 12 h after dark 1.9074650000000002 1.59901 2.21592