$3\mathrm{.}4$ A tracer is released instantaneously at a point in the ocean, and concentrations measurements $($in $m\frac{g}{L})$ within

$5m5m5m$ grid cells $1$ hour after release are shown in Figure $3\mathrm{.}27.$ The release location is at the center of the grid cell shown in Eigure $3\_27.$ Estimate the mass of tracer released, and the diffusion coefficient of the tracer. Do you expect the diffusion coefficient of the tracer to remain approximately constant over time? Explain.

TABLE $3$:$3$ Measured Concentrations in $m\frac{g}{L}.$

$\backslash$table$[[ydar{r}_x,-200m,-150m,-100m,-50m,$om$,50m,100m,150m,200m,250m,300m,350m$