condition mean min max 4 h after light 1.87499 1.73644 2.01354 8 h after light 0.877996 0.845749 0.910243 12 h after light 1.16204 1.14 1.18408 4 h after dark 1.28784 1.04462 1.61139 8 h after dark 2.0026966666666666 1.79456 2.3132 12 h after dark 1.8454733333333333 1.07314 2.46588