condition mean min max 4 h after light 11.076924 10.781769 11.372079 8 h after light 9.312861 7.968224 10.657498 12 h after light 11.121249 10.781769 11.460729 4 h after dark 10.8491245 10.781769 10.91648 8 h after dark 10.6938045 10.60584 10.781769 12 h after dark 8.51579 8.51579 8.51579