how to find out the coldest point

clear all;fclose all;clc;close all;clear a=fopen('files.dat','r'); gg=0; while ~feof(a) fgets(a); gg=gg+1; end frewind(a) for i=1:gg b=fscanf(a,'%s',1); c=load(b); high(:,i)=c(:,1); pre(:,i)=c(:,2); temp(:,i)=c(:,3); rh(:,i)=c(:,4); u(:,i)=c(:,5); v(:,i)=c(:,6); ws(:,i)=c(:,7); wd(:,i)=c(:,8);

end

 for i=1:400
t(i,:)=nanmean(temp(i,:));
pres(i,:)=nanmean(pre(i,:));
rhs(i,:)=nanmean(rh(i,:));
uw(i,:)=nanmean(u(i,:));
vw(i,:)=nanmean(v(i,:));
wsp(i,:)=nanmean(ws(i,:));
wdr(i,:)=nanmean(wd(i,:));
hight(i,:)=nanmean(high(i,:));
 end
subplot(241);plot(t,high(100:200,:);title('temperature'),ylim([1,20]),
xlabel('temperature'),ylabel('hight'),legend('temperature'),grid on;

subplot(242);plot(pre,high);title('pressure'),ylim([1,20]), xlabel('pressure'),ylabel('hight'),grid on, legend('pressure');

subplot(243);plot(rhs,high);title('relative humidity'),ylim([1,20]), xlabel('relativehumidity'),ylabel('hight'),grid on,legend('relativehumidity');

subplot(244);plot(uw,high);title('u_zonal'),ylim([1,20]), xlabel('u_zonal'),ylabel('hight'),grid on, legend('u_zonal');

subplot(245);plot(vw,high);title('v-meriodanal'), xlabel('v_meriodanal'),ylabel('hight'),grid on,legend('v-meriodanal');

subplot(246);plot(wsp,high);title('wind speed'), xlabel('windspeed'),ylabel('hight'),grid on,legend('windspeed');

subplot(247);plot(wdr,high);title('wind direction'),ylim([1,20]), xlabel('winddirection'),ylabel('hight'),grid on, legend('winddirection'); for i=1:400 tdif(i,:)=t(i,:)-temp(i,:); pdif(i,:)=pres(i,:)-pre(i,:); rdif(i,:)=rhs(i,:)-rh(i,:); udif(i,:)=uw(i,:)-u(i,:); vdif(i,:)=vw(i,:)-v(i,:); wsdif(i,:)=wsp(i,:)-ws(i,:); wddif(i,:)=wdr(i,:)-wd(i,:); end

 subplot(241);plot(tdif,high);title('temperature'),
  xlabel('temperature'),ylabel('hight'),grid on, legend('temperature');

subplot(242);plot(pdif,high);title('pressure'), xlabel('pressure'),ylabel('hight'),grid on, legend('pressure');

subplot(243);plot(rdif,high);title('relative humidity'), xlabel('relativehumidity'),ylabel('hight'),grid on,legend('relativehumidity');

subplot(244);plot(udif,high);title('u_zonal'), xlabel('u_zonal'),ylabel('hight'),grid on, legend('u_zonal');

subplot(245);plot(vdif,high);title('v-meriodanal'), xlabel('v_meriodanal'),ylabel('hight'),grid on,legend('v-meriodanal');

subplot(246);plot(wsdif,high);title('wind speed'), xlabel('windspeed'),ylabel('hight'),grid on,legend('windspeed');

subplot(247);plot(wddif,high);title('wind direction'), xlabel('winddirection'),ylabel('hight'),grid on, legend('winddirection'); for i=1:400

t(i,:)=nanmean(temp(i,:)); pres(i,:)=nanmean(pre(i,:)); rhs(i,:)=nanmean(rh(i,:)); uw(i,:)=nanmean(u(i,:)); vw(i,:)=nanmean(v(i,:)); wsp(i,:)=nanmean(ws(i,:)); wdr(i,:)=nanmean(wd(i,:)); end

subplot(241);plot(tdif,high(100:200,:)
title('temperature'),ylim([1,20]),
xlabel('temperature'),ylabel('hight'),grid on, legend('temperature');

 subplot(242);plot(pdif,high);title('pressure'),ylim([1,20]),
 xlabel('pressure'),ylabel('hight'),grid on, legend('pressure');

subplot(243);plot(rdif,high);title('relative humidity'),ylim([1,20]), xlabel('relativehumidity'),ylabel('hight'),grid on,legend('relativehumidity');

 subplot(244);plot(udif,high);title('u_zonal'),ylim([1,20]),
 xlabel('u_zonal'),ylabel('hight'),grid on, legend('u_zonal');

subplot(245);plot(vdif,high);title('v-meriodanal'),ylim([1,20]), xlabel('v_meriodanal'),ylabel('hight'),grid on,legend('v-meriodanal','hight');

subplot(246);plot(wsdif,high);title('wind speed'),ylim([1,20]), xlabel('windspeed'),ylabel('hight'),grid on,legend('windspeed');

subplot(247);plot(wddif,high);title('wind direction'),ylim([1,20]), xlabel('winddirection'),ylabel('hight'),grid on, legend('winddirection');

 hight =high(100:200,:);
 temperature=temp(100:200,:);
 pressure=pre(100:200,:);
 relative =rh(100:200,:);
 zonal=u(100:200,:);
 meriodanal=v(100:200,:);
 winds=ws(100:200,:);
 windr=wd(100:200,:);
 mtep=mean(temperature);
 mhig=mean(hight);
 subplot(241);plot(temperature,hight);title('temperature'),
 xlabel('temperature'),ylabel('hight'),legend('temperature');
  subplot(242);plot(pressure,hight);title('pressure'),
 xlabel('pressure'),ylabel('hight'),legend('pressure');
  subplot(243);plot(relative,hight);title('relative'),
 xlabel('relative'),ylabel('hight'),legend('relative');
  subplot(244);plot(zonal,hight);title('zonal'),
 xlabel('zonal'),ylabel('hight'),legend('zonal');
  subplot(245);plot(meriodanal,hight);title('meriodanal'),
 xlabel('meriodanal'),ylabel('hight'),legend('meriodanal');
  subplot(246);plot(winds,hight);title('wnd speed'),
 xlabel('winds'),ylabel('hight'),legend('winds');
  subplot(247);plot(windr,hight);title('winddirection'),
 xlabel('windr'),ylabel('hight'),legend('windr');

[David Sanchez]

Do you expect anyone to read your code? Please, edit it with "{}Code". What do you mean by the coldest point?