condition mean min max ZT0-3 5.6462125 5.270664999999999 6.0217600000000004 ZT4-7 5.187989999999999 5.187989999999999 5.187989999999999 ZT8-11 4.76588 4.76588 4.76588 ZT12-15 0 0 0 ZT16-19 5.4167749999999995 5.4167749999999995 5.4167749999999995 ZT20-23 5.75332 5.75332 5.75332