load 'uh5ywsm'
M = uh5ywsm;

mat1 = M (1:21,:);

years1 = mat1 (:,1);
ws1 = mat1 (:,2);

bb1 = robustfit (years1,ws1);



load 'uh5ywsm'
M = uh5ywsm;

mat2 = M (2:22,:);

years2 = mat2 (:,1);
ws2 = mat2 (:,2);

bb2 = robustfit (years2,ws2);


load 'uh5ywsm'
M = uh5ywsm;

mat3 = M (3:23,:);

years3 = mat3 (:,1);
ws3 = mat3 (:,2);

bb3 = robustfit (years3,ws3);


load 'uh5ywsm'
M = uh5ywsm;

mat4 = M (4:24,:);

years4 = mat4 (:,1);
ws4 = mat4 (:,2);

bb4 = robustfit (years4,ws4);



load 'uh5ywsm'
M = uh5ywsm;

mat5 = M (5:25,:);

years5 = mat5 (:,1);
ws5 = mat5 (:,2);

bb5 = robustfit (years5,ws5);


load 'uh5ywsm'
M = uh5ywsm;

mat6 = M (6:26,:);

years6 = mat6 (:,1);
ws6 = mat6 (:,2);

bb6 = robustfit (years6,ws6);




trendchangesplot = figure;
hold on
trenchangesplot = plot (years1,years1*bb1(2)+bb1(1),'blue','Linewidth',2);
hold on
grid on
trenchangesplot = plot (years2,years2*bb2(2)+bb2(1),'blue','Linewidth',2);
hold on
grid on
trenchangesplot = plot (years3,years3*bb3(2)+bb3(1),'blue','Linewidth',2);
hold on
trenchangesplot = plot (years4,years4*bb4(2)+bb4(1),'blue','Linewidth',2);
hold on
trenchangesplot = plot (years5,years5*bb5(2)+bb5(1),'blue','Linewidth',2);
hold on
trenchangesplot = plot (years6,years6*bb6(2)+bb6(1),'blue','Linewidth',2);
hold on
ylabel ('wind speed (m/s)','Fontsize',12);


load 'uh5ywsm'
MM = uh5ywsm;

load 'bb'
bb = bb;

years = MM (:,1);
ws = MM (:,2);

trendchengesmean = figure;
hold on
trendchangesmean = plot (years, ws, 'cyan','Linewidth',2);
hold on
trenschangesmean = plot (years, years*bb(2) + bb(1),'magenta','Linewidth',2);
hold on
grid on
trenchangesmean = plot (years1,years1*bb1(2)+bb1(1),'blue','Linewidth',2);
hold on
grid on
trenchangesmean = plot (years2,years2*bb2(2)+bb2(1),'blue','Linewidth',2);
hold on
grid on
trenchangesmean = plot (years3,years3*bb3(2)+bb3(1),'blue','Linewidth',2);
hold on
trenchangesmean = plot (years4,years4*bb4(2)+bb4(1),'blue','Linewidth',2);
hold on
trenchangesmean = plot (years5,years5*bb5(2)+bb5(1),'blue','Linewidth',2);
hold on
trenchangesmean = plot (years6,years6*bb6(2)+bb6(1),'blue','Linewidth',2);
hold on
xlabel ('years','Fontsize',12);
hold on
ylabel ('wind speed (m/s)','Fontsize',12);
hold on
axis ([1975 2012 4.5 8]);
hold on
legend ('5 yr running average','-0.0035 * yr - 2.237 (C / yr)','20 yrs trends');