condition mean min max 4 h after light 10.5878425 10.530482 10.645203 8 h after light 10.4310705 10.216938 10.645203 12 h after light 9.9955255 9.345848 10.645203 4 h after dark 10.5080505 10.370898 10.645203 8 h after dark 10.8624105 10.831629 10.893192 12 h after dark 8.467375 8.467375 8.467375