I thought doing this will solved the problem:
But it still gives the error:
Actually was only able to use jerrett et al. for Mortality when i had “Mean” under seasonal Metric. am i doing it right, also for Max. Delta = 1.85 ppb i got max. incidence = 0.024 on county scale, is that too low?
Did i do the whole process correctly?
That’s a strange outcome. I’m going to ask one of my colleagues to contact you and see if she can replicate this issue. Should we contact you at your gmail address?
Yes, my gmail will be better, thanks a lot for following up