condition mean min max 0 h after light 6.590915 6.44351 6.73832 4 h after light 3.28924 2.65271 3.92577 8 h after light 6.98138 6.23564 7.72712 4 h after dark 6.4009 4.37903 8.42277 8 h after dark 5.30248 4.97731 5.62765 12 h after dark 5.3693349999999995 5.35283 5.38584