condition mean min max ZT0-3 37.2104 36.9938 37.427 ZT4-7 31.6582 31.6582 31.6582 ZT8-11 63.349 63.349 63.349 ZT12-15 0 0 0 ZT16-19 73.9697 73.9697 73.9697 ZT20-23 55.28145 55.28145 55.28145