condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.312599 0.0 0.625198 8 h after light 0.3136775 0.0 0.627355 4 h after dark 0.6240075 0.622777 0.625238 8 h after dark 0.31226 0.0 0.62452 12 h after dark 0.0 0.0 0.0