condition mean min max 4 h after light 12.434412 12.348365 12.520459 8 h after light 12.0320125 11.643374 12.420651 12 h after light 11.2264165 9.965346 12.487487 4 h after dark 10.4432905 10.08348 10.803101 8 h after dark 12.1292565 9.722406 14.536107 12 h after dark 10.355948 10.355948 10.355948