condition mean min max ZT0-3 10.60038555425 10.24733113 10.9534399785 ZT4-7 11.23996811675 8.949283208499999 13.530653025 ZT8-11 14.59587891 13.73095517 15.46080265 ZT12-15 23.561594822500002 21.100788150000003 26.022401495 ZT16-19 36.0627307125 28.13498122 43.990480205 ZT20-23 59.101302795 55.405880815 62.796724775