first axis indexes the component type. The second axis specifies
values or uncertainties. The third axis indexes the polynomial
order. If the data uses the Sher-Beck format, then the last axis
will have a length of one and ENDF-102 should be consulted for
energy dependence. Otherwise, the data uses the Madland format
which is a polynomial of incident energy.
For example, if ‘EFR’ is given first in the component order
attribute and the data uses the Madland format, then the energy
released in the form of fission fragments at an incident energy
\(E\) is given by
\[\text{data}[0, 0, 0] + \text{data}[0, 0, 1] \cdot E
+ \text{data}[0, 0, 2] \cdot E^2 + \ldots\]
And its uncertainty is
\[\text{data}[0, 1, 0] + \text{data}[0, 1, 1] \cdot E
+ \text{data}[0, 1, 2] \cdot E^2 + \ldots\]