In June 2020, fuel in Slovakia averaged €1.090 for petrol

Petrol, monthly average€1.090/L
Diesel, monthly average€1.035/L
LPG, monthly average€0.535/L
Weekly bulletins held for June 20205

Monthly averages for Slovakia across June 2020, from the stored EU Weekly Oil Bulletin monthly history (European Commission, CC BY 4.0).