### getR4D.sh
### Computes the total rainfall reflected by the
###   rain4DayTestData.csv file

cp /dev/null R4D_tmp01.csv

daDayRainTotal=0

while read -r line
do
    
    daEpochTime=$(echo $line | sed -e "s/,.*$//")
    date=$(date -d @$daEpochTime | sed -e "s/\ *SAST.*$//")
    daHour=$(date -d @$daEpochTime | sed -e "s/^.*202..//" | sed -e "s/:.*$//")
    
    daRain=$(echo $line | sed -e "s/^.*,\ //")
   
    temp=$(expr $daRain+$daDayRainTotal | bc)
   daDayRainTotal=$temp
   
done < rain4Day.csv

echo $daDayRainTotal