yesterday (observation)	currently (observation)	today (forecast)	tomorrow (forecast)
Belgium	moderate - 5	moderate - 5	moderate - 5	good - 3
Flanders	moderate - 5	moderate - 5	moderate - 5	good - 3
Brussels	very poor - 7	moderate - 5	moderate - 5	good - 3
Wallonia	moderate - 5	moderate - 5	moderate - 5	fairly good - 4