condition mean min max ZT0-3 1973.25 1973.25 1973.25 ZT4-7 1850.0 1850.0 1850.0 ZT8-11 1662.95 1662.95 1662.95 ZT12-15 1644.4 1644.4 1644.4 ZT16-19 1498.25 1498.25 1498.25 ZT20-23 1806.4499999999998 1806.4499999999998 1806.4499999999998