condition mean min max ZT0-3 89.6272225125 58.59281432 120.66163070500001 ZT4-7 179.853030975 161.0273494 198.67871255 ZT8-11 61.9788797125 32.97715676 90.980602665 ZT12-15 25.4010538725 19.930423445000002 30.8716843 ZT16-19 89.9549161025 67.78155412 112.12827808499998 ZT20-23 166.54325152500002 147.4516609 185.63484215