condition mean min max ZT0-3 204.95 204.95 204.95 ZT4-7 285.0 285.0 285.0 ZT8-11 309.5 309.5 309.5 ZT12-15 199.10000000000002 199.10000000000002 199.10000000000002 ZT16-19 119.15 119.15 119.15 ZT20-23 149.85 149.85 149.85