condition mean min max ZT0-3 147.0999693925 85.809740785 208.390198 ZT4-7 14.944223031749999 13.378202885 16.510243178499998 ZT8-11 12.245523533250001 9.7387902605 14.752256806 ZT12-15 13.78352121425 12.2486299935 15.318412434999999 ZT16-19 32.495193692499996 25.998307099999998 38.992080285 ZT20-23 56.1672375475 54.756378325 57.57809677