condition mean min max 4 h after light 8.6165935 8.507971 8.725216 8 h after light 9.043371 8.684453 9.402289 12 h after light 10.059442 9.918354 10.20053 4 h after dark 9.5314135 9.205911 9.856916 8 h after dark 11.945115000000001 10.058808 13.831422 12 h after dark 8.67766 8.67766 8.67766