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 0.0 0.0 0.0 3 h after dark 0.14979233333333333 0.0 0.449377 6 h after dark 0.0 0.0 0.0 9 h after dark 0.304109 0.0 0.912327 12 h after dark 0.0 0.0 0.0