condition mean min max ZT0-3 117.95526961 90.76259757 145.14794165 ZT4-7 340.1213634 273.78661885 406.45610795 ZT8-11 799.4208487 668.9553837000001 929.8863136999998 ZT12-15 1043.8011774 971.8789300999999 1115.7234247 ZT16-19 729.8954215250001 614.74525955 845.0455835 ZT20-23 401.60321795000004 358.9908826 444.2155533