condition mean min max ZT0-3 0.00039216316666666664 0.0002305215 0.000610703 ZT4-7 0.000234387 0.000234387 0.000234387 ZT8-11 4.09421e-05 4.09421e-05 4.09421e-05 ZT12-15 0.00024016975 0.0002356905 0.000244649 ZT16-19 0.0001970014 0.0001970014 0.0001970014 ZT20-23 0.00019418400000000002 0.00019418400000000002 0.00019418400000000002