yesterday (observation)	currently (observation)	today (forecast)	tomorrow (forecast)
Belgium	very poor - 7	very poor - 7	moderate - 5	poor - 6
Flanders	bad - 8	very poor - 7	poor - 6	poor - 6
Brussels	very bad - 9	very bad - 9	poor - 6	poor - 6
Wallonia	poor - 6	poor - 6	moderate - 5	moderate - 5