A ground level source emits $1000 \mathrm{~g}$ per day of $\mathrm{SO}_{2}$. In vicinity of the source, ambient temperature is measured at $10 \mathrm{~m}$ and $110 \mathrm{~m}$ as $25^{\circ} \mathrm{C}$ and $24.5^{\circ} \mathrm{C}$, respectively. The mean wind speed is found to be $2 \mathrm{~m}$ per second. The dispersion coefficients at 1000 $\mathrm{m}$ downwind distance from the source are given in table below:
Estimated ground level concentration $\text{(in $\mu$ g / $m^{3}$, rounded off to two decimal places)}$ of $\mathrm{SO}_{2}$ at a downwind distance of $1000 \mathrm{~m}$ (at the plume centerline) from the source is________
