yesterday (observation)	currently (observation)	today (forecast)	tomorrow (forecast)
Belgium	fairly good - 4	good - 3	good - 3	fairly good - 4
Flanders	fairly good - 4	good - 3	fairly good - 4	moderate - 5
Brussels	fairly good - 4	good - 3	fairly good - 4	moderate - 5
Wallonia	fairly good - 4	good - 3	good - 3	good - 3