condition mean min max ZT0-3 41.254119 41.254119 41.254119 ZT4-7 62.3738635 62.3738635 62.3738635 ZT8-11 115.252715 115.252715 115.252715 ZT12-15 71.0445885 71.0445885 71.0445885 ZT16-19 117.66316 117.66316 117.66316 ZT20-23 124.9545545 124.9545545 124.9545545