set key outside bottom
set key box
set terminal png
set output 'solar.png'
set xdata time
set timefmt "%b %d %H:%M:%S %Y"
# set title "Solar Hot Water & Domestic Hot Water Temperatures" 
set ylabel "Fahrenheit"
set yrange [1:*]
set xrange [*:*]
set xlabel " "
set grid
set size 1.4 ,0.6
set key top left

heat_on(a, b, c, d) = int(a) | int(b) | int(c) | int(d)

plot 'housetemps.input' using 1:9 t "Rightmost Solar Panel Air" with l lc rgb "red",  \
     '../solar/pooltemps.input' using 1:7 t "Leftmost Solar Panel Air" with l lc rgb "blue", \
     'housetemps.input' using 1:13 t "Hot Water Supply To House" with l lc rgb "orange", \
     'housetemps.input' using 1:17 t "Hot Water Heat Exchanger Input" with l lc rgb "green", \
     'housetemps.input' using 1:15 t "Solar Water Tank (probe @ top)" with l lc rgb "black",  \
     'housetemps.input' using 1:18 t "Solar Pump Case Temperature" with l lc rgb "grey", \
     'housetemps.input' using 1:($19-30) t "Solar Pump On" with points lc rgb "orange", \
     'zone.data' using 1:(heat_on($5,$7,$8,$9) * (1 - $6) * 10) t "Heating Floors With Gas" with points lc rgb "blue", \
     'zone.data' using 1:(heat_on($5,$7,$8,$9) * $6 * 10) t "Heating Floors With Solar" with points lc rgb "brown"


#     'housetemps.input' using 1:($20-30) t "Recirculation Pump On" with points lc rgb "purple", \