Hi I was wondering if someone might be able to give me an idea about the range on a peak flow meter.( what should it be)?I am a 35 yr old female about 5'6" & 170lb

2 yrs ago I had a severe case of pnumonia(sp ?) so now every time that I get sick and my breathing becomes labored i start to worry.I am currently on albuteral and the zpack for sinus & uri..Thanks in advanced