condition mean min max ZT0-3 857.94075 848.028 867.8534999999999 ZT4-7 2006.63 2006.63 2006.63 ZT8-11 1292.675 1292.675 1292.675 ZT12-15 0 0 0 ZT16-19 85.70345 85.70345 85.70345 ZT20-23 195.11 195.11 195.11