condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.145462 0.0 0.436386 9 h after light 0.134191 0.0 0.402573 12 h after light 0.42275175 0.0 0.832506 3 h after dark 0.0 0.0 0.0 6 h after dark 0.0 0.0 0.0 9 h after dark 0.0 0.0 0.0 12 h after dark 0.2526505 0.0 0.505301