Eikon API get_data TR.SETTLEMENTPRICE returns time series, SETTLE only latest point, how to get m...

...ore SETTLE data?

Looking at coal futures ATWMc1, the following request returns last weeks settlements

df, err= ek.get_data('ATWMc1', ['TR.SETTLEMENTPRICE.date', 'TR.SETTLEMENTPRICE'], {'SDate':'-5D', 'EDate':'0D'})
df

whereas

df, err= ek.get_data('ATWMc1', ['SETTLE', 'SETTLEDATE'], {'SDate':'-5D', 'EDate':'0D'})
df

only returns the last settlement.

Values seem to differ (the lower is the correct settlement price from the ICE).

How to download a time series based on SETTLE (and what is returned in the first query, it's not the settlement for sure...)?

Thanks for your help!