condition mean min max ZT0-3 34.479849 34.479849 34.479849 ZT4-7 37.825419 37.825419 37.825419 ZT8-11 48.684026 48.684026 48.684026 ZT12-15 36.966466000000004 36.966466000000004 36.966466000000004 ZT16-19 45.953221 45.953221 45.953221 ZT20-23 44.727418 44.727418 44.727418