condition mean min max ZT0-3 182.155134 182.155134 182.155134 ZT4-7 200.50841200000002 200.50841200000002 200.50841200000002 ZT8-11 161.8737945 161.8737945 161.8737945 ZT12-15 195.4565425 195.4565425 195.4565425 ZT16-19 172.693196 172.693196 172.693196 ZT20-23 174.80693100000002 174.80693100000002 174.80693100000002