reset

set term postscript enhanced eps color font "Helvetica,20pt"
set term postscript landscape
set output 'stokes_v_time_take_2.eps'

#reduce sample number
#set samples 500

#set style arrow 3 nohead
#set style fill transparent solid 0.8 border lc rgb 'grey'


set lmargin 6.2
set rmargin 6.2

set title "Starting time: 27/01/2018 00:35"

set style line 1 lt 1 lw 2

set multiplot 
# layout 3, 1
# set lmargin at screen 0.05
# set tmargin at screen 0.95
# set bmargin at screen 0.7

#plot1
set size 1,0.60
set origin -0.001,0.4
set ylabel "Stokes parameters" offset 1.5,0
set xlabel "Time (hours)" # font "Helvetica, 26" offset -1,0

set yrange [-1.2:1.2]
set xrange[0:72]

set label 1 "S0" at 39, 0.88 tc rgb "black"
set label 2 "S1" at 39, 0.28 tc rgb "red"
set label 3 "S2" at 39, -0.24 tc rgb "blue"
set label 4 "S3" at 39, -0.72 tc rgb "orange"

#set linetype 2

plot 'monitor_data_20180124.txt' every 100  using (($1)/3600):2 w l ls 1 lc rgb "black" notitle, 'monitor_data_20180124.txt' every 100 using (($1)/3600):3 w l ls 1 lc rgb "red" notitle, 'monitor_data_20180124.txt' every 100 using (($1)/3600):4 w l ls 1 lc rgb "blue" notitle, 'monitor_data_20180124.txt' every 100 using (($1)/3600):5 w l ls 1 lc rgb "orange" notitle


#plot2
set size 1,0.4
set origin 0,0
unset xlabel
unset ylabel
set yrange [26:34]
set y2range [15:65]

set xlabel "Time (hours)"
unset ytics
unset y2tics
unset title

set y2label "Humidity (%)" offset -0.6, 0
set y2tics 10
set ytics 2
set ytics nomirror
set ylabel "Temperature ({/Symbol \260}C)" offset 0.6, 0

set label 5 "Temperature" at 39, 29.4    tc rgb "red"
set label 6 "Humidity" at 39, 31.6 tc rgb "blue"
#set label 2 "(b)"  at 65,0.12 font "Helvetica,18"
plot 'monitor_data_20180124.txt'  using (($1)/3600):7 axes x1y1 w l ls 1 lc rgb "red" notitle, 'monitor_data_20180124.txt'  using (($1)/3600):8 axes x1y2 w l ls 1 lc rgb "blue" notitle