condition mean min max ZT0-3 40.658302 40.658302 40.658302 ZT4-7 95.01595499999999 95.01595499999999 95.01595499999999 ZT8-11 102.024453 102.024453 102.024453 ZT12-15 84.4935255 84.4935255 84.4935255 ZT16-19 111.763064 111.763064 111.763064 ZT20-23 117.55490950000001 117.55490950000001 117.55490950000001