condition mean min max ZT0-3 218.35 218.35 218.35 ZT4-7 476.6 476.6 476.6 ZT8-11 399.45000000000005 399.45000000000005 399.45000000000005 ZT12-15 357.4 357.4 357.4 ZT16-19 302.45 302.45 302.45 ZT20-23 298.05 298.05 298.05