The
experimental design quality equations as implemented in the applet:

The
** summation over qualities** equation (equivalent, but not identical
to Curtis et al., 2002, eq. 6):

_{}

The
** product of summation over source qualities** equation:

_{}

where:

**a **is the partial derivative vector _{} for a source-receiver
pair

*w* is the relative weight for each datum
(source-receiver pair) as given by the relative amplitude for the
source-receiver pair, the relative amplitude is determined by the
source-receiver distance and the attenuation relation