condition mean min max ZT0-3 9.26990442125 7.562074662500001 10.97773418 ZT4-7 10.815555079500001 9.647432254 11.983677905 ZT8-11 19.734567097499998 15.9760922 23.493041995 ZT12-15 23.9797096175 23.56082787 24.398591365 ZT16-19 12.697051181749998 12.33384261 13.060259753499999 ZT20-23 9.53280756425 9.354240685499999 9.711374443