condition mean min max ZT0-3 159.886136 159.886136 159.886136 ZT4-7 213.480516 213.480516 213.480516 ZT8-11 70.913205 70.913205 70.913205 ZT12-15 127.34210949999999 127.34210949999999 127.34210949999999 ZT16-19 55.210952 55.210952 55.210952 ZT20-23 25.004419 25.004419 25.004419