condition mean min max ZT0-3 1240.45 1240.45 1240.45 ZT4-7 1471.9 1471.9 1471.9 ZT8-11 1324.9 1324.9 1324.9 ZT12-15 1409.4499999999998 1409.4499999999998 1409.4499999999998 ZT16-19 1392.0500000000002 1392.0500000000002 1392.0500000000002 ZT20-23 1248.55 1248.55 1248.55