condition mean min max ZT0-3 1.23216 1.23216 1.23216 ZT4-7 0.8724890000000001 0.8724890000000001 0.8724890000000001 ZT8-11 0.839119 0.839119 0.839119 ZT12-15 1.1737805000000001 1.1737805000000001 1.1737805000000001 ZT16-19 2.544805 2.544805 2.544805 ZT20-23 1.526485 1.526485 1.526485