condition mean min max ZT0-3 201.29346666666666 94.6121 391.2045 ZT4-7 180.3755 180.3755 180.3755 ZT8-11 121.684 121.684 121.684 ZT12-15 123.2225 106.626 139.819 ZT16-19 118.702 118.702 118.702 ZT20-23 157.3315 157.3315 157.3315