condition mean min max ZT0-3 1207.9499999999998 1207.9499999999998 1207.9499999999998 ZT4-7 1432.2 1432.2 1432.2 ZT8-11 1571.1 1571.1 1571.1 ZT12-15 1513.8 1513.8 1513.8 ZT16-19 1454.6 1454.6 1454.6 ZT20-23 1366.4 1366.4 1366.4