CIRDLES/topsoil — pull request #66 by nityasantoshi (2014-08-26 18:44:30+00:00)
Title: Check that table has 5 columns instead of 4

Previously, the code only checked that there were at least 4 columns in
the data table. However, the uncertainly ellipse chart currently
requires 5 columns, and the verification was intended to check for 5
columns.