condition mean min max ZT0-3 1193.0 1193.0 1193.0 ZT4-7 1519.1 1519.1 1519.1 ZT8-11 1541.0 1541.0 1541.0 ZT12-15 1381.85 1381.85 1381.85 ZT16-19 1618.1999999999998 1618.1999999999998 1618.1999999999998 ZT20-23 1431.35 1431.35 1431.35