condition mean min max ZT0-3 72.3229 72.3229 72.3229 ZT4-7 63.5142 63.5142 63.5142 ZT8-11 57.158950000000004 57.158950000000004 57.158950000000004 ZT12-15 62.25405 62.25405 62.25405 ZT16-19 81.18924999999999 81.18924999999999 81.18924999999999 ZT20-23 79.3962 79.3962 79.3962