condition mean min max ZT0-3 6131.700000000001 6131.700000000001 6131.700000000001 ZT4-7 2763.8 2763.8 2763.8 ZT8-11 3858.15 3858.15 3858.15 ZT12-15 5813.45 5813.45 5813.45 ZT16-19 7374.650000000001 7374.650000000001 7374.650000000001 ZT20-23 6243.700000000001 6243.700000000001 6243.700000000001