open IN, "<header_data.dat";
@myheader = <IN>;
close IN;

open IN, "<daily_data1.dat";
@mydata1 = <IN>;
close IN;

open IN, "<daily_data2.dat";
@mydata2 = <IN>;
close IN;

open IN, "<daily_data3.dat";
@mydata3 = <IN>;
close IN;