condition mean min max ZT0-3 10.92877 10.92877 10.92877 ZT4-7 11.152717500000001 11.152717500000001 11.152717500000001 ZT8-11 11.959782 11.959782 11.959782 ZT12-15 12.715799 12.715799 12.715799 ZT16-19 11.1989105 11.1989105 11.1989105 ZT20-23 10.997983 10.997983 10.997983