condition mean min max ZT0-3 164.99849999999998 164.99849999999998 164.99849999999998 ZT4-7 113.5785 113.5785 113.5785 ZT8-11 71.42255 71.42255 71.42255 ZT12-15 80.24164999999999 80.24164999999999 80.24164999999999 ZT16-19 147.34199999999998 147.34199999999998 147.34199999999998 ZT20-23 180.6755 180.6755 180.6755