condition mean min max 0 h after light 8.472825 8.02955 8.9161 4 h after light 5.710485 5.12577 6.2952 8 h after light 6.270165 5.64694 6.89339 4 h after dark 6.664580000000001 6.36584 6.96332 8 h after dark 5.555854999999999 4.00169 7.11002 12 h after dark 7.32029 6.33198 8.3086