condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.03215485 0.0 0.0643097 8 h after light 0.0312214 0.0 0.0624428 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0