condition mean min max 0 h after light 2.001665 1.1995 2.80383 4 h after light 2.023035 1.6296 2.41647 8 h after light 0.796863 0.407006 1.18672 4 h after dark 1.375959 0.788478 1.96344 8 h after dark 1.37825 0.0 2.7565 12 h after dark 1.7924845 0.390599 3.19437