condition mean min max ZT0-3 10.798991 10.798991 10.798991 ZT4-7 10.613633 10.613633 10.613633 ZT8-11 11.582791499999999 11.582791499999999 11.582791499999999 ZT12-15 10.725491 10.725491 10.725491 ZT16-19 10.484126 10.484126 10.484126 ZT20-23 11.7812075 11.7812075 11.7812075