condition mean min max ZT0-3 25.205849999999998 24.7505 25.6612 ZT4-7 28.171599999999998 28.171599999999998 28.171599999999998 ZT8-11 25.16455 25.16455 25.16455 ZT12-15 0 0 0 ZT16-19 25.3973 25.3973 25.3973 ZT20-23 26.21385 26.21385 26.21385