condition mean min max 4 h after light 9.56544 9.48962 9.61208 8 h after light 10.293546666666668 10.18213 10.38495 12 h after light 9.961323333333333 9.83403 10.06616 4 h after dark 9.239583333333334 8.927769999999999 9.429110000000001 8 h after dark 9.073126666666667 8.95392 9.22156 12 h after dark 8.86163 8.625060000000001 9.12838