condition mean min max ZT0-3 8.636040000000001 8.636040000000001 8.636040000000001 ZT4-7 45.40695 45.40695 45.40695 ZT8-11 42.3853 42.3853 42.3853 ZT12-15 19.8487 19.8487 19.8487 ZT16-19 5.48851 5.48851 5.48851 ZT20-23 4.632875 4.632875 4.632875