condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.253869 0.0 0.761607 9 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 3 h after dark 0.0 0.0 0.0 6 h after dark 0.14390366666666668 0.0 0.431711 9 h after dark 0.4244033333333333 0.0 1.27321 12 h after dark 0.0 0.0 0.0