condition mean min max ZT0-3 1290.8511666666666 1006.0185 1589.495 ZT4-7 1606.03 1606.03 1606.03 ZT8-11 1897.8500000000001 1897.8500000000001 1897.8500000000001 ZT12-15 1350.1975 1313.365 1387.03 ZT16-19 1192.17 1192.17 1192.17 ZT20-23 880.6735 880.6735 880.6735