condition mean min max 4 h after light 1.5826099999999999 1.19481 1.97041 8 h after light 1.70861 1.70254 1.71468 12 h after light 1.890355 1.7692 2.01151 4 h after dark 2.93856 2.72126 3.15586 8 h after dark 1.5435949999999998 1.41081 1.67638 12 h after dark 2.03698 2.01876 2.0552