For all parameters that are measured several
times (like 8 main crown angles) there are calculated 4 statistical
values: minimum, maximum, average and deviation. Deviation
of all parameters except diameter is a mere difference between
the maximum and minimum values of the parameter. In addition
to this deviation, there is a relative diameter deviation parameter that is calculated by the following formula: (Dmax/Dmin - 1) * 100%.
Comprehensive list of the Helium report parameters:
Measurements are used in different systems and tools: