Write a new VI to read and display the saved data (T vs t) from your temperature-monitoring VI. The new VI should display a graph of the data, along with the username, date, and time of data collection.  The user should also be able to specify whether the displayed temperature is in F, K, or C.

Make use of the Read from Spreadsheet File subVI [Programming » File I/O » Read from Spreadsheet.vi] to read the data. This will bring the file into memory as an array.  Then you can use all the array functions to pull out the data you want. This can be tricky, however. Some of the data is in a string format and some is numeric. You may want to use one Read from Spreadsheet File.vi to pull in just the string data, then use a second to pull in the numeric data.

Use a Case structure with three inputs to select either the Celsius, Fahrenheit, or Kelvin data.