station  lat      lon      day_night  
DB       47.378   -123.117  Day        
DB       47.378   -123.117  Night      
DU       47.404   -123.125  Day        
DU       47.404   -123.125  Night      
HP       47.581   -122.986  Day        
HP       47.581   -122.986  Night      
TW       47.371   -123.003  Day        
UN       47.812   -122.807  Day        
UN       47.812   -122.807  Night