condition mean min max ZT0-3 2.3433283333333335 1.45839 3.970905 ZT4-7 5.4246099999999995 5.4246099999999995 5.4246099999999995 ZT8-11 128.29 128.29 128.29 ZT12-15 28.266374999999996 21.5748 34.95795 ZT16-19 10.767254999999999 10.767254999999999 10.767254999999999 ZT20-23 4.428495 4.428495 4.428495