condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.023824166666666667 0.0 0.0413858 3 h after dark 0.0 0.0 0.0 6 h after dark 0.024195966666666666 0.0 0.0725879 9 h after dark 0.012247966666666667 0.0 0.0367439 12 h after dark 0.0 0.0 0.0