condition mean min max ZT0-3 2130.1710405000003 1950.76303 2309.579051 ZT4-7 1639.7825470000002 1617.4130930000001 1662.1520010000002 ZT8-11 1346.004576 1302.8560710000002 1389.153081 ZT12-15 1963.1436855000002 1471.1481505000002 2455.1392205 ZT16-19 2734.1032115 2726.108744 2742.0976789999995 ZT20-23 2626.0216327499998 2593.7828444999996 2658.260421