- No masking was applied to the inventories.
- The domains contain a mix of US and Canada activity; 
  some domains are US-only, others only contain Canada, 
  and some contain both US+Canada.
- Not every domain has activity for every month; for example 
  there is very little activity in the Toronto 1km domain (GTA1) 
  in the winter months due to ice cover, so months devoid of any 
  activity will not have hourly FF10s for that domain. 
- The CHCG1 domain is way inland and does not have any CMV activity. 
  We assume “CHCG” means “Chicago” and we would have expected the 1km 
  domain to be centered over Chicago, similar to how the other domains 
  are centered over major cities. But CHCG1 is in the middle of inland 
  Illinois and is way off center from the 4km parent domain.