condition mean min max ZT0-3 5.23606 4.8984000000000005 5.57372 ZT4-7 14.146650000000001 14.146650000000001 14.146650000000001 ZT8-11 128.0905 128.0905 128.0905 ZT12-15 0 0 0 ZT16-19 35.5437 35.5437 35.5437 ZT20-23 21.0889 21.0889 21.0889