condition mean min max ZT0-3 582.559001 582.559001 582.559001 ZT4-7 454.521346 454.521346 454.521346 ZT8-11 485.58715900000004 485.58715900000004 485.58715900000004 ZT12-15 555.8371354999999 555.8371354999999 555.8371354999999 ZT16-19 511.036702 511.036702 511.036702 ZT20-23 534.7485095 534.7485095 534.7485095