condition mean min max ZT0-3 35.5816 35.131550000000004 36.03165 ZT4-7 38.092299999999994 38.092299999999994 38.092299999999994 ZT8-11 83.36664999999999 83.36664999999999 83.36664999999999 ZT12-15 0 0 0 ZT16-19 79.6498 79.6498 79.6498 ZT20-23 49.17985 49.17985 49.17985