There's either a typo or something wrong with your sensor: you can't have pm10 < pm2.5.
(Equivalent to saying you have more people under 2.5 years old than under 10 years old.)
What? pm2.5 is smaller than pm10. You can have a bunch of larger particles that aren't small
What? pm2.5 is smaller than pm10. You can have a bunch of larger particles that aren't small