condition mean min max ZT0-3 0.17311094124999998 0.1379202745 0.208301608 ZT4-7 0.11713671475000001 0.070753404 0.1635200255 ZT8-11 1.172776717 0.7143634765 1.6311899575000002 ZT12-15 3.43896275525 2.8773248325000003 4.000600678 ZT16-19 4.53399993325 3.7072643175 5.360735548999999 ZT20-23 4.7850848265 4.7337685215 4.836401131500001