condition mean min max ZT0-3 78.85785 78.85785 78.85785 ZT4-7 89.78155000000001 89.78155000000001 89.78155000000001 ZT8-11 77.46379999999999 77.46379999999999 77.46379999999999 ZT12-15 65.5744 65.5744 65.5744 ZT16-19 85.7171 85.7171 85.7171 ZT20-23 75.98034999999999 75.98034999999999 75.98034999999999