how to get historic Settlement price for Florida Gas Zone 3 using python ek.getdata?

Hi,

I am trying to get Florida Gas Zone 3 Historic settlement prices but I couldn't get the data.

I am able to get for HH using the ticker 'NGc1' as in below python code

data = ek.get_data('NGc1', ['TR.SETTLEMENTPRICE.Date', 'TR.SETTLEMENTPRICE'], parameters = {"SDate":"2015-01-01","EDate":str(datetime.now().date())})

But when I try for FGZ-3, which has ticker 'OTGASFIXMc1', the data returning NULL. I'm not sure about this ticker but I could see the data for future prices with 'OTGASFIXMK20','OTGASFIXML20' and so on.

Your help is much appreciated here.

Thanks.