condition mean min max ZT0-3 133.49325 122.876 144.1105 ZT4-7 247.1205 247.1205 247.1205 ZT8-11 611.7155 611.7155 611.7155 ZT12-15 0 0 0 ZT16-19 232.039 232.039 232.039 ZT20-23 298.7645 298.7645 298.7645