Variance between the groups' means (R's between.var).
Number of groups.
Description of the calculation.
Number of observations per group.
A note on the sample size.
Power of the test.
Significance level (R's sig.level).
R's warnings, each once, in R's order (an empty array when there are none).
Variance within the groups (R's within.var).
Result of powerAnovaTest.