Consider the decomposition of dinitrogen pentoxide:

2 N_{2}O_{5} (g) → 4 NO_{2} (g) + O_{2} (g)

The following data were collected for the reaction at a given temperature:

What is the average rate of formation of NO_{2} after 4 seconds of reaction? Be sure to include a minus sign if your calculated result is negative. Your answer should be expressed in units of M/s and with the correct number of significant digits, but do not include the units in your submitted answer.