condition mean min max ZT0-3 0.030142975000000002 0.0150496 0.04523635 ZT4-7 0.01485805 0.01485805 0.01485805 ZT8-11 0.195544 0.195544 0.195544 ZT12-15 0 0 0 ZT16-19 0.04451845 0.04451845 0.04451845 ZT20-23 0.0298089 0.0298089 0.0298089