Here are some graphs of the recent Picarro data, which Gregor gave me last week. The fist graph shows part of the data we looked at on last Tuesday (this time only form 17th to 26th). The second graph is the most recent CO2 data that i have. It ranges from October 26th to November 4th.
I thought it is a good idea to show this now, such that everyone can get an idea what the recent data looks like.
There are a couple of gaps in the readings which corresponds to the time when flask measurements were taken. Except the large one between Tuesday 2nd and Wednesday 3rd, which is due to the power shut down.
The black crosses correspond to the raw 12-CO2 data. We can see that the CO2 signal becomes much more spread starting at mid -Thursday (28th of October). I’m guessing that this corresponds to the event when the tube was set up on the roof.
I also attached a 3rd graph showing the standard deviation of the 2nd CO2 time series (the one between October 26th and November 4th). You can see that the error increases significantly after the 28th, and then even more after the 29th of October.
The red line is a running mean with a window of 100 time units, corresponding to about 15 minutes. The running mean shows a single curve with a detectable trend, but after the 28th of October it has a much larger deviation associated with it.
In addition, it seems that the "spread of the Co2 signal" decreases during night time, but is prevalent through the day until late night.
That is what I can say now. Let me know if you have some questions and feel free to comment on this.
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