TYPE OF INSTALLATION 
ONSHORE 
Water treatment plants 
Power plants and industries 
Us -S- Coast Guard 
Paper mills 
Sanitary District Observers 
U. S. Weather Bureau Ist & 2nd 
Order, U. S. Naval & Air Force 
Bases, Canadian Meteorological 
Division IL 
Table 5 
U. S. Weather Bureau Cooperatives, 
Canadian Meteorological Division 
Ee EET. ic 
U. S. Lake Survey, Canadian 
Hydrographic Service 
Other (research, 
TOTAL ONSHORE 
INLAND 
U. S. Weather Bureau Ist & 2nd 
Order, U. S. Naval & Air Force 
Bases, Canadian Meteorological 
Division I 
individuals) 
U. S. Weather Bureau Cooperatives, 
Canadian Meteorological Division 
1) STEE. c 
Research installations 
TOTAL INLAND 
TOTAL ONSHORE AND INLAND SOURCES 
Summary of Knowledge of Usable Data Sources 
24 
132 
472 
67 
ho 
100.0 
FREQUENCY OF USABLE DATA SOURCES 
No. 
