# Clocked Data Storage Vision Data Access functions

This topic lists the Vision Data Access functions that get values from a Count structure

Note:

- For the GetErrorCount, the GetFailCount, the GetPassCount and the GetTotalCount functions, returned values are from a referenced Count structure, which is inserted in the spreadsheet when the CountPassFail function is created.

Function | Description
GetCount(Structure) | Returns the Count value from a Delay structure.
GetErrorCount(Structure) | Returns the incremental count of errors from a Count structure. The counter is incremented when the returned value is less than zero.
GetFailCount(Structure) | Returns the incremental count of failures from a Count structure. The counter is incremented when the returned value is equal to zero.
GetMax(Structure) | Returns themaximum value from a Delay structure.
GetMean(Structure) | Returns the mean value from a Delay structure.
GetMin(Structure) | Returns the minimum value from a Delay structure.
GetPassCount(Structure) | Returns the incremental count of passes from a Count structure. The counter is incremented when the returned value is greater than zero.
GetSDev(Structure) | Returns the SDev value from a Delay structure. This calculation is a biased standard deviation, where the denominator is N-1. An unbiased standard deviation has a denominator of N.
GetSum(Structure) | Returns the sum value from a Delay structure.
GetTotalCount(Structure) | Returns the total number of passes, failures and errors from a Count structure.
GetValue(Structure, Index) | Returns the value stored in a Delay structure.