condition mean min max ZT0-3 157.23674999999997 155.97 158.50349999999997 ZT4-7 166.0385 166.0385 166.0385 ZT8-11 79.82525 79.82525 79.82525 ZT12-15 0 0 0 ZT16-19 142.88 142.88 142.88 ZT20-23 168.6945 168.6945 168.6945