condition mean min max ZT0-3 1738.0 1738.0 1738.0 ZT4-7 2077.3 2077.3 2077.3 ZT8-11 1753.75 1753.75 1753.75 ZT12-15 1468.45 1468.45 1468.45 ZT16-19 1445.1 1445.1 1445.1 ZT20-23 1491.1 1491.1 1491.1