Access to Planned Test Execution Metrics Associated with an Iteration

Is it possible to get -- in the case where a test plan is linked to iteration(s) -- the number of points planned for execution (attempted/complete) for each date in the iteration that has an associated planned execution:



According to the XML schema documentation, this is handled by a testphase:
https://jazz.net/products/rational-quality-manager/api-doc-6.0.1/schemas/qm_xsd/elements/testphase.html

When I GET a testplan that is linked to an iteration, however, there is no testphase (in the XML): there is only a parentIteration, which doesn't seem to have any interesting properties:
https://jazz.net/products/rational-quality-manager/api-doc-6.0.1/schemas/qm_xsd/elements/parentIteration.html