condition mean min max ZT0-3 769.6500000000001 769.6500000000001 769.6500000000001 ZT4-7 856.5 856.5 856.5 ZT8-11 1074.95 1074.95 1074.95 ZT12-15 1034.85 1034.85 1034.85 ZT16-19 1078.25 1078.25 1078.25 ZT20-23 882.25 882.25 882.25