condition mean min max ZT0-3 88.813034 88.813034 88.813034 ZT4-7 91.821251 91.821251 91.821251 ZT8-11 116.3761945 116.3761945 116.3761945 ZT12-15 128.6794285 128.6794285 128.6794285 ZT16-19 106.3308705 106.3308705 106.3308705 ZT20-23 99.959575 99.959575 99.959575