Each map that you select and load into the GIS viewer will appear on the left-hand side of the

window as a layer. All of the options to create maps are straightforward, though some require a

few more steps than others. Below we give some step-by-step examples of each type.

9.2.1 Air Quality Grids

Air quality grid maps present annual summary values of air pollution metrics (e.g., daily average,

daily maximum, or other metric where available) within each grid cell. After choosing the air

quality grid that you want to map, double-click on the layer name on the left-hand side of the

window. A small box will appear with the Display Options for the layer. Choose the metric

that you want to map. When mapping an air quality grid with county-level PM2.5 values, the

available default metrics are D24HourMean and QuarterlyMean.

If you keep the default display options, the maps can often look a little complicated or busy. For

example, when mapping county-level level PM2.5 levels with the default display options you might

get a map looking like the following:


n401 - n402 - n403 - n404 - n405 - n406 - n407 - n408 - n409 - n410 - n411 - n412 - n413 - n414 - n415 - n416 - n417 - n418 - n419 - n420 - n421 - n422 - n423 - n424 - n425 - n426 - n427 - n428 - n429 - n430 - n431 - n432 - n433 - n434 - n435 - n436 - n437 - n438 - n439 - n440 - n441 - n442 - n443 - n444 - n445 - n446 - n447 - n448 - n449 - n450

   Flag of Portugal 


 castellano: DISPER CUSTIC DESCAR RADIA    italiano:     


 français:    português:  






deutsch: DIS CUS  DES  RAD

castellano: DIS CUS DES  RAD   english: DIS CUS DES RAD  


 português: DIS CUS DES RAD   italiano:   DIS CUS  DES RAD


français:  DIS CUS DES RAD