A researcher investigated the effect of light intensity on the rate of photosynthesis in a suspension of the green alga Chlorella. The volume of oxygen produced by the suspension was measured at various light intensities using a micro-respirometer over a series of 12-minute runs.
The table below shows the results of this investigation:
Light intensity (μmol m−2s−1)Volume of oxygen collected in 12 minutes (mm3)Rate of oxygen production (mm3/hour)10012.462.020024.8124.030035.2Z40041.0205.050042.6213.0\begin{array}{|c|c|c|} \hline \textbf{Light intensity } (\mu\text{mol m}^{-2}\text{s}^{-1}) & \textbf{Volume of oxygen collected in 12 minutes } (\text{mm}^3) & \textbf{Rate of oxygen production } (\text{mm}^3/\text{hour}) \\ \hline 100 & 12.4 & 62.0 \\ \hline 200 & 24.8 & 124.0 \\ \hline 300 & 35.2 & Z \\ \hline 400 & 41.0 & 205.0 \\ \hline 500 & 42.6 & 213.0 \\ \hline \end{array}Light intensity (μmol m−2s−1)100200300400500Volume of oxygen collected in 12 minutes (mm3)12.424.835.241.042.6Rate of oxygen production (mm3/hour)62.0124.0Z205.0213.0
Calculate the value of ZZZ in the table.