plnb20=18.450;
plnb21=19.450;
plnb22=20.450;
plnb23=21.450;
plnb24=22.450;
plnb25=23.450;
plnb26=24.450;
plnb27=25.450;
plnb28=26.450;
plnb29=27.450;
plnb30=28.450;
plnb31=29.450;
plnb32=30.450;
plnb33=31.450;
plnb34=32.450;
plnb35=33.450;
plnb36=34.450;
plnb37=35.450;
plnb38=36.450;
plnb39=37.450;
plnb40=38.450;
plnb41=39.450;
plnb42=40.350;
plnb43=41.450;
plnb44=42.450;
plnb45=43.450;
plnb46=44.450;
plnb47=45.450;
plnb48=46.450;
plnb49=47.450;
plnb50=48.450;
plnb51=49.450;
plnb52=50.450
