assertDataFrameApproximateEquals failed

Hi,

I have the following failed test, as you can see, the test fails on row 3 where the POSL_AVG is 0.53 and 0.52 from result and expected result respectively

The assert line is as follows

`assertDataFrameApproximateEquals(expectedData, monthlyPOSL, tol = 0.1)`

I have tried different values for "tol" (0.1, 0.011, -0.1, -0.011 etc) with no luck :(

Start from the assertDataFrameApproximateEquals assertion and reproduce the reported mismatch using the shown tolerance values and dataframe results. Check how the tolerance is interpreted for the POSL_AVG values, then confirm the behavior with a focused test covering the 0.53 versus 0.52 comparison.

Written by the indexing model from the issue text.