condition mean min max ZT0-3 142.82313 142.82313 142.82313 ZT4-7 168.68102249999998 168.68102249999998 168.68102249999998 ZT8-11 181.9399185 181.9399185 181.9399185 ZT12-15 192.5421065 192.5421065 192.5421065 ZT16-19 209.382273 209.382273 209.382273 ZT20-23 213.3574715 213.3574715 213.3574715