condition mean min max ZT0-3 43.064144 43.064144 43.064144 ZT4-7 32.624527 32.624527 32.624527 ZT8-11 26.090632499999998 26.090632499999998 26.090632499999998 ZT12-15 32.2022205 32.2022205 32.2022205 ZT16-19 36.111527 36.111527 36.111527 ZT20-23 73.9962075 73.9962075 73.9962075