condition mean min max ZT0-3 33.86085 33.86085 33.86085 ZT4-7 26.396 26.396 26.396 ZT8-11 25.19935 25.19935 25.19935 ZT12-15 26.53435 26.53435 26.53435 ZT16-19 40.2596 40.2596 40.2596 ZT20-23 34.7528 34.7528 34.7528