condition mean min max 4 h after light 9.688842999999999 9.647965 9.729721 8 h after light 9.629121999999999 8.221675 11.036569 12 h after light 9.435426 8.97078 9.900072 4 h after dark 9.6674705 8.931536 10.403405 8 h after dark 9.209634 8.665085 9.754183 12 h after dark 10.86385 10.86385 10.86385