set terminal png size 1200, 600
set output "graph.png"
set xdata time
set timefmt "%Y%m%d%H%M%S"
set format x "%Y%m%d %H:%M"
set mytics 2
set grid xtics ytics mytics

plot \
'log.txt' using 1:6 with lines title "Max Cap (mWh)", \
'log.txt' using 1:7 with lines title "Remaining Cap (mWh)", \
'log.txt' using 1:8 with lines title "Rate (mW)", \
'log.txt' using 1:9 with lines title "Remaining Time (s)"