condition mean min max ZT0-3 1.0808335 0.936241 1.2254260000000001 ZT4-7 0.0 0.0 0.0 ZT8-11 0.0958495 0.0958495 0.0958495 ZT12-15 0 0 0 ZT16-19 0.092843 0.092843 0.092843 ZT20-23 0.092736 0.092736 0.092736