condition mean min max ZT0-3 62.066075000000005 46.5124 77.61975000000001 ZT4-7 25.1602 25.1602 25.1602 ZT8-11 1.471121 1.471121 1.471121 ZT12-15 0 0 0 ZT16-19 16.9184 16.9184 16.9184 ZT20-23 75.28735 75.28735 75.28735