set title "Weight loss rate"
set ylabel "Pounds per week"
#set y2label "r^2"

set term png size 1400,900
set output "rate-graph.png"
set timefmt "%Y-%m-%d"
set xdata time
set format x "%b\n%d"

#set xrange ["2018-02-18":]

plot "rate" using 1:2 with lines lw 3 title "Rate", \
    #"rate" using 1:3 with lines lw 1 title "r^2" axes x1y2