condition mean min max 0 h after light 2.55675 2.51079 2.60271 4 h after light 1.554055 1.04546 2.06265 8 h after light 1.647475 1.43055 1.8644 4 h after dark 1.89908 1.42572 2.37244 8 h after dark 3.048445 2.48921 3.60768 12 h after dark 3.190355 3.10762 3.27309