condition mean min max ZT0-3 0.07783324875 0.054637464000000004 0.1010290335 ZT4-7 0.07196019825000001 0.0329617905 0.11095860600000002 ZT8-11 0.11912941525000001 0.1015159585 0.13674287200000002 ZT12-15 2.4030232025 1.2032851334999999 3.6027612715000004 ZT16-19 3.0867714142500002 2.892782459 3.2807603695 ZT20-23 4.0748454175 3.9871092405 4.1625815945