$10-$ A swimming pool has a small leak at the bottom. We have measurements of rainfall, evaporation, and water level of the pool on a daily basis for $10$ days. Please use the water balance to determine the average daily leakage out of the swimming pool in $f\frac{t^3}{?}$ day. $(10$ p$)$

$\backslash$table$[[$Day$,$Evaporation,Rainfall $($in$),$Water Level $($in$)],[1,0\mathrm{.}5,,60],[2,0,,],[3,0\mathrm{.}5,2,],[4,0,,],[5,0\mathrm{.}5,3,],[6,0\mathrm{.}5,,],[7,0\mathrm{.}5,,],[8,1,5,],[9,0\mathrm{.}5,,],[10,0\mathrm{.}5,,50]]$