condition mean min max ZT0-3 54.7627 54.7627 54.7627 ZT4-7 48.064949999999996 48.064949999999996 48.064949999999996 ZT8-11 32.9483 32.9483 32.9483 ZT12-15 42.33975 42.33975 42.33975 ZT16-19 54.7286 54.7286 54.7286 ZT20-23 60.10773333333333 60.10773333333333 60.10773333333333