condition mean min max 4 h after light 12.7244 12.4103 13.0385 8 h after light 9.186985 8.71349 9.66048 12 h after light 9.847355 9.58171 10.113 4 h after dark 10.390015 9.89153 10.8885 8 h after dark 10.8138 10.5466 11.081 12 h after dark 9.82753 9.79107 9.86399