condition mean min max ZT0-3 93.278525 85.94784999999999 100.6092 ZT4-7 69.39914999999999 69.39914999999999 69.39914999999999 ZT8-11 86.05895000000001 86.05895000000001 86.05895000000001 ZT12-15 0 0 0 ZT16-19 119.2435 119.2435 119.2435 ZT20-23 96.07065 96.07065 96.07065