Question $5$

A catchment is served by $3$ stations, which record long term annual rainfall as follows; RGauge $1-125$; RGauge $2-98$: RGauge $3-84.$ While analyzing monthly rainfall data for each of the raingauge it was noted that there are missing month data for RGauge $1.$ If the data for the missing months are as shown in the table, work out an estimate data for RGauge $1$:

$\backslash$table$[[$SN$,$MONTH,RGAUGE $2,$RGAUGE $3],[1,$MAY,$23,56],[2,$JUNE,$43,78],[3,$JULY,$21,54],[4,$AUGUST,$33,67]]$