condition mean min max ZT0-3 105.5153 88.98655 135.074 ZT4-7 224.9985 224.9985 224.9985 ZT8-11 136.7935 136.7935 136.7935 ZT12-15 82.99125000000001 75.02815 90.95435 ZT16-19 64.88615 64.88615 64.88615 ZT20-23 70.4214 70.4214 70.4214