condition mean min max 0 h after light 8.58731 8.05206 9.12256 4 h after light 12.85545 12.3409 13.37 8 h after light 24.5019 24.1442 24.8596 4 h after dark 18.5987 18.1252 19.0722 8 h after dark 14.32765 13.9269 14.7284 12 h after dark 9.164674999999999 7.73145 10.5979