condition mean min max ZT0-3 40.56128 40.56128 40.56128 ZT4-7 76.4353175 76.4353175 76.4353175 ZT8-11 93.074932 93.074932 93.074932 ZT12-15 81.888358 81.888358 81.888358 ZT16-19 58.915625000000006 58.915625000000006 58.915625000000006 ZT20-23 51.6969905 51.6969905 51.6969905