condition mean min max 4 h after light 55.37665 54.0908 56.6625 8 h after light 49.0185 47.9096 50.1274 12 h after light 53.24335 52.9188 53.5679 4 h after dark 80.53110000000001 76.8309 84.2313 8 h after dark 80.434 80.3507 80.5173 12 h after dark 72.87585 69.0375 76.7142