condition mean min max 4 h after light 5.16284 5.13209 5.18928 8 h after light 5.248273333333334 5.02284 5.4217900000000006 12 h after light 5.27904 4.9726099999999995 5.60984 4 h after dark 5.270283333333333 5.12091 5.54355 8 h after dark 5.3361833333333335 5.03999 5.8293 12 h after dark 5.17454 5.00212 5.42048