condition mean min max ZT0-3 13.46415 13.46415 13.46415 ZT4-7 15.398800000000001 15.398800000000001 15.398800000000001 ZT8-11 14.31595 14.31595 14.31595 ZT12-15 9.8063 9.8063 9.8063 ZT16-19 12.7597 12.7597 12.7597 ZT20-23 10.8991 10.8991 10.8991