Air quality monitoring van in London

The video tutorial focuses on the Note 2, represented by the red line on the left-hand axis. It explains that measurements are taken in parts per billion, which can be confusing as they are reported in micrograms.

What is the main topic of interest in the video?

• The blue line on the right-hand axes

• The green line on the bottom axes

• The yellow line on the top axes

• The Note 2, represented by the red line

How is the Note 2 data represented?

• In parts per million

• In parts per billion

• In kilograms

• In liters

What is the confusion mentioned regarding the measurement units?

• The data is measured in meters but reported in feet

• The data is measured in liters but reported in gallons

• The data is measured in parts per billion but reported in micrograms

• The data is measured in parts per million but reported in kilograms