Higher than expected levels at school.
TLDR; normal dosage is ~.06 but in a chem class I TA it spikes way up as shown, it this level a concern?
I got a radiacode 103 back in September and have been messing around with it since but started carrying it with me everywhere in a pant pocket just about a week ago. My normal background radiation is about .06 uMs/h but as I was looking back on this graph I noticed two big spikes so I tried to figure out what I was doing. Turns out that was during the time where I TA for a freshman chemistry class at my high school, the time frame lines up to within 2 minutes tolerance. I did not notice it at the time because I had turned off the sound back when I was messing with a fire detector and had forgotten to turn the alarm back on. I am planning on going in next week and trying to figure out the source but I was just sitting in the teachers chair by a window not even near the chemical storage room. They both average around a .25, but have spikes goin up, I know the spikes are not as important as the average but its just a level I have not run into naturally in my area.
I don't know a ton about radiation safety. Is this a level I should be concerned about or is it kind of normal?
Thank you so much to anyone who helps me with this, I just don't know if this is something interesting to look at or something I should be worried about.
Also I will note that my region is known to have a radon risk leading to mandatory radon detectors in basements but this chemistry classroom is on the second floor so I doubt that it is a radon leak.
Update: looking closer at timing it seems likely the source is person in the classroom or someone's bag, I usually eat some part of my lunch in the room alone but the increased radiation levels don't seem to start till after lunch but I am planning on snooping around during lunch next chance I get to try and figure out if is in fact a person because I also switch which side of the room I am on between eating lunch and being the TA so it might just be a distance thing.