condition mean min max ZT0-3 633.15 633.15 633.15 ZT4-7 842.3 842.3 842.3 ZT8-11 1211.55 1211.55 1211.55 ZT12-15 1460.5 1460.5 1460.5 ZT16-19 1233.05 1233.05 1233.05 ZT20-23 866.0999999999999 866.0999999999999 866.0999999999999