set title "Monthly temperatures January to August (2018-2022)"
set xlabel "Years"
set ylabel "Averages in degrees Celcius"
set xtics 1
# use \ to continue a command over many lines of code
# x:y means the data column used for the x and y axes
plot 'gnup07.txt' using 1:2 title 'January' with lp, \
'gnup07.txt' using 1:3 title 'February' with lp, \
'gnup07.txt' using 1:4 title 'March' with lp, \
'gnup07.txt' using 1:5 title 'April' with lp, \
'gnup07.txt' using 1:6 title 'May' with lp, \
'gnup07.txt' using 1:7 title 'June' with lp, \
'gnup07.txt' using 1:8 title 'July' with lp, \
'gnup07.txt' using 1:9 title 'August' with lp, \
Data File (gnup07.txt):
# YR Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
2018 3.0 6.0 8.3 9.9 16.3 20.1 27.2 28.3 19.8 14.3 9.1 5.4
2019 4.0 7.0 6.3 9.9 15.3 21.1 25.2 29.3 17.8 15.3 9.4 5.3
2020 3.3 6.5 8.1 9.1 16.1 20.2 27.5 28.8 19.9 14.2 9.8 5.0
2021 3.6 6.2 8.7 9.0 16.0 20.0 27.0 28.0 19.0 14.0 9.0 5.0
2022 3.7 6.8 8.2 9.3 16.7 20.8 27.5 28.5 19.5 14.5 9.5 5.5
