condition mean min max ZT0-3 288.9 288.9 288.9 ZT4-7 503.1 503.1 503.1 ZT8-11 363.45000000000005 363.45000000000005 363.45000000000005 ZT12-15 436.35 436.35 436.35 ZT16-19 393.45000000000005 393.45000000000005 393.45000000000005 ZT20-23 332.1 332.1 332.1