In March 2020, fuel in Czechia averaged €1.011 for petrol

Petrol, monthly average€1.011/L
Diesel, monthly average€1.022/L
LPG, monthly average€0.473/L
Weekly bulletins held for March 20205

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