condition mean min max 4 h after light 5.43832 5.34187 5.581169999999999 8 h after light 5.5326200000000005 5.43312 5.659590000000001 12 h after light 5.57795 5.5477099999999995 5.611280000000001 4 h after dark 5.33233 5.14542 5.43127 8 h after dark 5.355343333333333 5.32251 5.4154 12 h after dark 5.4112833333333334 5.343 5.50861