condition mean min max ZT0-3 1.83575 1.826155 1.845345 ZT4-7 2.958685 2.958685 2.958685 ZT8-11 25.14745 25.14745 25.14745 ZT12-15 0 0 0 ZT16-19 7.25975 7.25975 7.25975 ZT20-23 3.64888 3.64888 3.64888