condition mean min max ZT0-3 92.02564999999998 84.24475 99.80654999999999 ZT4-7 78.73685 78.73685 78.73685 ZT8-11 52.7573 52.7573 52.7573 ZT12-15 0 0 0 ZT16-19 93.23134999999999 93.23134999999999 93.23134999999999 ZT20-23 101.7667 101.7667 101.7667