condition mean min max 0 h after light 0.217887 0.0 0.435774 2 h after light 0.0 0.0 0.0 4 h after light 0.1106945 0.0 0.221389 8 h after light 0.0 0.0 0.0 12 h after light 0.0 0.0 0.0 2 h after dark 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.1225365 0.0 0.245073 12 h after dark 0.0 0.0 0.0