condition mean min max ZT0-3 4840.4 4840.4 4840.4 ZT4-7 5216.1 5216.1 5216.1 ZT8-11 5250.8 5250.8 5250.8 ZT12-15 4498.25 4498.25 4498.25 ZT16-19 5409.299999999999 5409.299999999999 5409.299999999999 ZT20-23 6104.4 6104.4 6104.4