set datafile separator "," 
set xdata time 
set timefmt "%Y-%m-%dT%H:%M:%S" 
set term push 
set terminal png medium size 1200 800 
set output './thePlot.png'
plot [][-10:40] 'thePlot.csv'  using 1:80 title "your title" with lines title "plot title" with lines;
set output 
set term windows