condition mean min max ZT0-3 92.046 92.046 92.046 ZT4-7 77.64875 77.64875 77.64875 ZT8-11 82.93 82.93 82.93 ZT12-15 73.63565 73.63565 73.63565 ZT16-19 75.0899 75.0899 75.0899 ZT20-23 83.03999999999999 83.03999999999999 83.03999999999999