Is it just me or this some horrifically bad English? I have a fairly strong math background and I'm struggling to figure out what the author meant by any of tha

Is it just me or this some horrifically bad English? I have a fairly strong math background and I'm struggling to figure out what the author meant by any of that. As far as I can tell, it's something like, "The author made a bad variable. Also, the goal was to check air quality but the variable was bad." What does the subject being air quality impact have to do with anything there?