For a particular location on average, the net radiation is $110$ W$/$m$2,$the sensible heatflux is $30$ W$/$m$2,$and the ground heat flux is $5$ W$/$m$2.$Air temperature is $28\mathrm{.}5\backslash$deg C$,$ relative humidity is $45\%,$ and wind speed is $2\mathrm{.}7$ m$/$s at a height of $2$ m$.$ Take roughness height z$0=0\mathrm{.}05$cm$.$ Determine the ET rate in mm$/$d using: $(1)$ the energy balance method, $(2)$ the aerodynamic method, $(3)$ the combined method, and $(4)$ the Priestley$-$Taylor method.