How much CO2 is the graph showing?
The graph is showing about 385 concentration of CO2.
What time of day was this data collected?
The time of day this data was collected was at May 1 in about 241 seconds.
In two more hours, when the next sample will be collected, will the amount of CO2 measured move up or down? Why!
In two more hours, when the next sample will be collected, the amount of CO2 measured would move up or down according to the climate. The climate affects the CO2 so, it would depend.