condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.89473 0.0 1.78946 4 h after dark 1.9104266666666665 0.0 3.77254 8 h after dark 0.0 0.0 0.0 12 h after dark 4.2951733333333335 2.32607 5.92126