condition mean min max ZT0-3 95.01746666666666 92.50505000000001 96.37219999999999 ZT4-7 80.20160000000001 80.20160000000001 80.20160000000001 ZT8-11 76.03775 76.03775 76.03775 ZT12-15 72.98479999999999 68.01634999999999 77.95325 ZT16-19 82.04935 82.04935 82.04935 ZT20-23 47.191649999999996 47.191649999999996 47.191649999999996