condition mean min max ZT0-3 16.02405 16.02405 16.02405 ZT4-7 11.37305 11.37305 11.37305 ZT8-11 10.351415 10.351415 10.351415 ZT12-15 9.967970000000001 9.967970000000001 9.967970000000001 ZT16-19 13.15895 13.15895 13.15895 ZT20-23 15.8734 15.8734 15.8734