condition mean min max ZT0-3 1201.30898 1201.30898 1201.30898 ZT4-7 817.5547475000001 817.5547475000001 817.5547475000001 ZT8-11 923.736455 923.736455 923.736455 ZT12-15 1269.4490645 1269.4490645 1269.4490645 ZT16-19 2214.2205905 2214.2205905 2214.2205905 ZT20-23 2354.4908905 2354.4908905 2354.4908905