condition mean min max ZT0-3 542.19381 542.19381 542.19381 ZT4-7 637.997977 637.997977 637.997977 ZT8-11 556.1958625 556.1958625 556.1958625 ZT12-15 408.334238 408.334238 408.334238 ZT16-19 692.4599855 692.4599855 692.4599855 ZT20-23 715.3068109999999 715.3068109999999 715.3068109999999