condition mean min max ZT0-3 0.044674 0.0 0.089348 ZT4-7 0.0899145 0.0899145 0.0899145 ZT8-11 0.0 0.0 0.0 ZT12-15 0.0152803625 0.0 0.030560725 ZT16-19 0.0 0.0 0.0 ZT20-23 0 0 0