condition mean min max ZT0-3 96.82596666666666 52.57825 162.0915 ZT4-7 332.591 332.591 332.591 ZT8-11 925.3040000000001 925.3040000000001 925.3040000000001 ZT12-15 199.509 179.4235 219.59449999999998 ZT16-19 322.42650000000003 322.42650000000003 322.42650000000003 ZT20-23 212.3935 212.3935 212.3935