condition mean min max ZT0-3 42.18095 42.18095 42.18095 ZT4-7 19.2381 19.2381 19.2381 ZT8-11 37.2535 37.2535 37.2535 ZT12-15 47.7394 47.7394 47.7394 ZT16-19 72.63145 72.63145 72.63145 ZT20-23 65.28585000000001 65.28585000000001 65.28585000000001