condition mean min max ZT0-3 70.11567672749999 40.079818655 100.1515348 ZT4-7 35.894292730000004 35.512645485 36.275939975 ZT8-11 51.7129253675 38.26254432 65.163306415 ZT12-15 63.22231968 54.05631405 72.38832531 ZT16-19 47.8026722375 43.440727885 52.164616589999994 ZT20-23 29.8689810775 26.467054705000002 33.270907449999996