condition mean min max ZT0-3 68.35730000000001 60.9277 75.7869 ZT4-7 116.1447 116.1447 116.1447 ZT8-11 119.4435 119.4435 119.4435 ZT12-15 0 0 0 ZT16-19 99.73169999999999 99.73169999999999 99.73169999999999 ZT20-23 116.6435 116.6435 116.6435