condition mean min max ZT0-3 1923.66 1923.66 1923.66 ZT4-7 1609.02 1609.02 1609.02 ZT8-11 1815.7849999999999 1815.7849999999999 1815.7849999999999 ZT12-15 1425.79 1425.79 1425.79 ZT16-19 2520.8050000000003 2520.8050000000003 2520.8050000000003 ZT20-23 2074.89 2074.89 2074.89