condition mean min max ZT0-3 1211.9 1211.9 1211.9 ZT4-7 1562.9 1562.9 1562.9 ZT8-11 905.85 905.85 905.85 ZT12-15 647.6500000000001 647.6500000000001 647.6500000000001 ZT16-19 497.15 497.15 497.15 ZT20-23 582.1500000000001 582.1500000000001 582.1500000000001