Suppose that we have rain gauges at two points $(1,0)$ and $(2,0)$ and want to estimate the value of precipitation at an arbitrary point $($x$,$y$).$ The variogram is a pure nugget effect with a sill of $1\mathrm{.}0,$ i$.$e$.$ the variogram is equal to $0$ for h $=0$ and is equal to $1$ for any interdistance h $>0.$Calculate the ordinary kriging weights and the kriging variance.Deduce what the weights would be if there were N samples.