condition mean min max ZT0-3 141.155134 141.155134 141.155134 ZT4-7 92.2551135 92.2551135 92.2551135 ZT8-11 118.40092150000001 118.40092150000001 118.40092150000001 ZT12-15 244.59314 244.59314 244.59314 ZT16-19 178.255524 178.255524 178.255524 ZT20-23 193.534149 193.534149 193.534149