What is hierarchical regression. Multilevel models? This terms means many different things unfortunately. the data seems to spread out over certain levels of the data which may mean hetero, there are formal test for it you might consider. You don't have a lot of data and it is restricted to a narrow range. I would use White SE if you are running regular linear regression (not multilevel models).
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Did a assumption test for a hierachical regression analysis and got this result on a test for homoscedasticity. Does it show homoscedasticity for the residuals? Can I trust this model if it is not?