condition mean min max ZT0-3 187.28122472500002 176.28309205 198.2793574 ZT4-7 68.8600055325 46.799396965 90.9206141 ZT8-11 67.4301271775 46.884892275 87.97536208 ZT12-15 177.546589125 144.31174345 210.7814348 ZT16-19 224.56777247499997 213.49519099999998 235.64035395 ZT20-23 203.95351577499997 196.44174335 211.46528819999997