hi mr wood.
i am sorry that i couldnt reply untill now i tried getting on last night but my computer froze. #1 is about 387 parts per million. #2 THIS SAMPle was taken in the evening. i think that in two more hour the count would be less because the sun is setting so tha plants arent getting the sinlight and they arent releasing carbon dioxide.
your favorite student
serena perez third period.