condition mean min max ZT0-3 1486.9499999999998 1486.9499999999998 1486.9499999999998 ZT4-7 1142.3 1142.3 1142.3 ZT8-11 1115.4 1115.4 1115.4 ZT12-15 1144.85 1144.85 1144.85 ZT16-19 1176.65 1176.65 1176.65 ZT20-23 1442.45 1442.45 1442.45