condition mean min max ZT0-3 1190.4499999999998 1190.4499999999998 1190.4499999999998 ZT4-7 1407.3 1407.3 1407.3 ZT8-11 1270.85 1270.85 1270.85 ZT12-15 1260.15 1260.15 1260.15 ZT16-19 1212.45 1212.45 1212.45 ZT20-23 1096.65 1096.65 1096.65