condition mean min max ZT0-3 56.7278 56.7278 56.7278 ZT4-7 49.773300000000006 49.773300000000006 49.773300000000006 ZT8-11 45.43155 45.43155 45.43155 ZT12-15 49.16885 49.16885 49.16885 ZT16-19 54.88225 54.88225 54.88225 ZT20-23 60.36425 60.36425 60.36425