condition mean min max ZT0-3 384.35 384.35 384.35 ZT4-7 309.9 309.9 309.9 ZT8-11 234.10000000000002 234.10000000000002 234.10000000000002 ZT12-15 191.8 191.8 191.8 ZT16-19 331.85 331.85 331.85 ZT20-23 357.45000000000005 357.45000000000005 357.45000000000005