condition mean min max ZT0-3 124.746318175 88.95410734999999 160.538529 ZT4-7 419.21404392000005 197.00909414 641.4189937000001 ZT8-11 1150.510318375 1043.75224575 1257.268391 ZT12-15 757.22054005 443.89504024999997 1070.54603985 ZT16-19 107.47855868 77.15854027500001 137.798577085 ZT20-23 39.475566602499995 27.9183326 51.032800605