condition mean min max ZT0-3 121.1 121.1 121.1 ZT4-7 116.7 116.7 116.7 ZT8-11 94.9 94.9 94.9 ZT12-15 148.6 148.6 148.6 ZT16-19 135.65 135.65 135.65 ZT20-23 156.89999999999998 156.89999999999998 156.89999999999998