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Plot for Sunrise times in Boston, MA

Included from trend description:

Sunrise times in Boston, MA based on data from US Naval Observatory, but using the ''urlread'' instead of ''urlfilter'' since it doesn't support POST/GET methods.

Note: It would be a good enhancement for URLFILTER.

Ref: http://aa.usno.navy.mil/data/docs/RS_OneDay.php

Plot Image
% Sunset times in Boston, MA
%   time vector is: time1823
%   data vector is: data1823
%
% Sunrise times in Boston, MA
%   time vector is: time1818
%   data vector is: data1818
plot(time1818,data1818, 'o-');
legend({'Sunrise times'})
title('Sunrise times in Boston, MA')
ylabel('AM')
datetick
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