One of the most useful features of Logger Pro is its capacity to graph modified data. This is extremely helpful in looking for the relationship between variables. When looking for relationships between variables, you may want to create a new calculated column based on existing data column(s) or a new manual column.
A calculated column can be based on one or more existing columns. To create a new calculated column, choose New Calculated Column from the Data menu. More detailed steps are available here.
A manual column can be manually edited in the data table or can contain non-numeric or generated values such as dates and times. To create a manually entered column choose New Manual Column from the Data menu. More detailed steps are available here.