condition mean min max 0 h after light 4.27546 0.0 8.55092 4 h after light 8.69725 0.0 17.3945 8 h after light 0.0 0.0 0.0 4 h after dark 8.399695 8.38313 8.41626 8 h after dark 8.47745 0.0 16.9549 12 h after dark 8.43138 8.33854 8.52422