TEST AND RESULT
• Form figure 9, we can find the data in 2006, 2007 and
2008 has little difference and distributed almost evenly.
the data is not normal at 2010 junction with 2011. The
change of NO2 shows a weakly certain periodicity.
• Form figure 10,we can find the NO2 concentration is
low during the summer and autumn while during the
winter and spring the NO2 concentration changes
greatly even at the same time .
• Form figure 11, the daily NO2 concentration is higher
in the days at the beginning and the end of one year.
• It can represent the multimensional data. Even the
dimension is high, it can still have a good visualization.
• We can not only get to know the data from the overall
but carefully observe the data concerned about .
• The color representing the data gives the better
intuitive visualization.