set term png
set grid
set style data lines
unset key
set output "eot.png"
set xlabel '<---Normalized Date--->'
set ylabel '<---Minutes Early/Late--->'
set title 'The equation of time'
plot 'analemma_data.txt' using 1:2 with lines
set output "declination.png"
set xlabel '<---Normalized Date--->'
set ylabel '<---Degrees North/South--->'
set title 'Declination'
plot 'analemma_data.txt' using 1:3 with lines
set output "analemma.png"
set xlabel '<---Minutes Early/Late--->'
set ylabel '<---Degrees North/South--->'
set title 'The analemma'
plot 'analemma_data.txt' using 2:3 with lines
quit