condition mean min max ZT0-3 56.049549999999996 50.9448 61.1121 ZT4-7 91.50290000000001 91.50290000000001 91.50290000000001 ZT8-11 69.8211 69.8211 69.8211 ZT12-15 92.3431 88.6055 96.08070000000001 ZT16-19 67.53675 67.53675 67.53675 ZT20-23 54.8981 54.8981 54.8981