condition mean min max ZT0-3 127.925767 127.925767 127.925767 ZT4-7 120.36827399999999 120.36827399999999 120.36827399999999 ZT8-11 141.22035 141.22035 141.22035 ZT12-15 245.897972 245.897972 245.897972 ZT16-19 158.792373 158.792373 158.792373 ZT20-23 257.3197235 257.3197235 257.3197235