Q$.64$ A ground level source emits $1000$ g per day of $S{O}_2.$ In vicinity of the source, ambient temperature is measured at $10$ m and $110$ m as $25C$ and $24\mathrm{.}5C,$ respectively. The mean wind speed is found to be $2$ m per second. The dispersion coefficients at $1000$ m downwind distance from the source are given in table below:

$\backslash$table$[[,$Dispersion coefficients $($in m$)],[,$Stable,Neutral,Unstable$],[$Crosswind direction,$50\mathrm{.}5,80\mathrm{.}0,156\mathrm{.}0],[$Vertical direction,$21\mathrm{.}4,41\mathrm{.}5,110\mathrm{.}2]]$

Estimated ground level concentration $($in $\frac{g}{m^3},$ rounded off to two decimal places$)$ of $S{O}_2$ at a downwind distance of $1000$ m $($at the plume centerline$)$ from the source is