column1    column2    |
data1        data1    |
data2        data2    |
data3        data3    |
data4        data4    |----------> this is tabe one, it has variable
data5        data5    |             number of rows but if the number 
data6        data6    |            of rows in tale 1 is 8 then tabe 2 
data7        data7    |            has also 8 rows but the number 
data8        data8    |            of tables is also variabe

column1    column2
data1    data1
data2    data2
data3    data3
data4    data4
data5    data5
data6    data6
data7    data7
data8    data8
[download]

so the problem is how to create chart which for x axis has column1 (but the number of rows in column one is variable)and the number of lines is the number of tables(data in the tables).

hope this brightens the problem.