set terminal png
set output 'pv_at_noon.png'
set xdata time
set timefmt "%b %d %H:%M:%S %Y"
set ylabel "Volts or Amps" 
set grid
set size 1.2 ,0.5
set key top left

set title "2009 PV Voltage, PV Current, Battery Voltage Measured At Noon Daily" 
set yrange [0:18]
set xrange ["May 15 00:00:00 2009":"dec 20 23:59:00 2009"]

plot  '../solar/pooltemps.noon.input' using 1:11 t "PV Voltage" with lines lc rgb "orange", \
      '../solar/pooltemps.noon.input' using 1:12 title "Battery Voltage" with lines lc rgb "red", \
      '../solar/pooltemps.noon.input' using 1:13 title "PV Current" with lines lc rgb "green"