condition mean min max ZT0-3 311.54467 311.54467 311.54467 ZT4-7 504.081676 504.081676 504.081676 ZT8-11 406.921489 406.921489 406.921489 ZT12-15 445.77429600000005 445.77429600000005 445.77429600000005 ZT16-19 217.4173355 217.4173355 217.4173355 ZT20-23 277.9462855 277.9462855 277.9462855