awk 'NR==1{printf "0.5 1.05 14 0 BL %s\n",$0}' $inp > _ti.txt
awk '{if(2<=NR&&NR<=13)print NR-2+0.5,$2}' $inp > _T.txt
awk '{if(2<=NR&&NR<=13)print NR-2+0.5,$3}' $inp > _R.txt

gmt set FONT_ANNOT_PRIMARY 12
gmt set MAP_ANNOT_OFFSET_PRIMARY 0.2c
gmt set FONT_LABEL 12p
gmt set MAP_LABEL_OFFSET 0.2c
gmt set MAP_TICK_LENGTH_PRIMARY 0.0c
gmt psbasemap -R0/12/0/400 -JX9/6 -Bxf1g1 -Bya100g100+l"Rainfall (mm)" -BEn -P -K > $fig
gmt psxy _R.txt -R -J -Sb1ub0 -W0.5 -Gcyan -B -K -O >> $fig
gmt psbasemap -R0/12/-10/30 -J -Bxf1 -Bya10+l"Temperature (@%12%\260@%%C)" -BWs -K -O >> $fig
gmt psxy _T.txt -R -J -W1,red -K -O >> $fig
gmt psxy _T.txt -R -J -SC0.2 -Gred -K -O >> $fig
gmt pstext -R0/12/0/1 -J -F+f+a+j -N -K -O << EOT >> $fig
  0.5 -0.02 12 90 MR Jan
  1.5 -0.02 12 90 MR Feb
  2.5 -0.02 12 90 MR Mar
  3.5 -0.02 12 90 MR Apr
  4.5 -0.02 12 90 MR May
  5.5 -0.02 12 90 MR Jun
  6.5 -0.02 12 90 MR Jul
  7.5 -0.02 12 90 MR Aug
  8.5 -0.02 12 90 MR Sep
  9.5 -0.02 12 90 MR Oct
 10.5 -0.02 12 90 MR Nov
 11.5 -0.02 12 90 MR Dec
EOT
gmt pstext _ti.txt -R -J -F+f+a+j -N -O >> $fig