condition mean min max ZT0-3 21.4292 21.4292 21.4292 ZT4-7 13.11375 13.11375 13.11375 ZT8-11 17.61305 17.61305 17.61305 ZT12-15 19.84265 19.84265 19.84265 ZT16-19 30.8136 30.8136 30.8136 ZT20-23 27.1356 27.1356 27.1356