condition mean min max ZT0-3 638.05 638.05 638.05 ZT4-7 354.2 354.2 354.2 ZT8-11 366.1 366.1 366.1 ZT12-15 592.35 592.35 592.35 ZT16-19 842.0999999999999 842.0999999999999 842.0999999999999 ZT20-23 761.45 761.45 761.45