condition mean min max ZT0-3 1407.7 1407.7 1407.7 ZT4-7 1067.7 1067.7 1067.7 ZT8-11 1010.3 1010.3 1010.3 ZT12-15 957.95 957.95 957.95 ZT16-19 1200.8000000000002 1200.8000000000002 1200.8000000000002 ZT20-23 1382.85 1382.85 1382.85