Page 
Appendix to Part I. Accuracy of computed evaporation, and comparison of formula developed 
in this investigation with others 121 
Accuracy of computed evaporation 121 
Comparison of formula developed in this investigation with others 122 
Comparison with Freeman's (and Meyer's) Formula 122 
Comparison with Horton's results 126 
Comparison with formulas of Abassia, Fitzgerald, Carpenter and Stelling 126 
Comparison with formula proposed by Marvin 129 
Conclusions on comparison of evaporation formulas 129 
List of Tables 
Table 
1. Regular U. S. Weather Bureau and Canadian Meteorological Service Stations near Lake 
Michigan-Huron 10 
2. Regular U. S. Weather Bureau and Canadian Meteorological Service Stations near Lake 
Superior 11 
3. Rainfall stations, adjacent areas, and factors for converting rainfall in inches of depth to units of 
0.0001 ft. rise of surface of Lake Michigan-Huron 12 
4. Rainfall stations, adjacent areas, and factors for converting rainfall in inches of depth to units of 
0.0001 ft. rise of surface of Lake Superior 13 
5. Rainfall stations, adjacent areas, and factors for converting rainfall in inches of depth to units of 
100 inch-miles on land part of drainage area (excluding lake area) of Lake Michigan- 
Huron 14, 15 
6. Rainfall stations, adjacent areas, and factors for converting rainfall in inches of depth to units of 
100 inch-miles on land part of drainage area (excluding lake area) of Lake Superior. ... 15 
7. Areas of land and water surfaces on the Great Lakes drainage basin 17 
8. Location of barometric points 20 
9. Values of X x for use in formula (18) at the gages indicated 23 
10. Computation of e for Lake Michigan-Huron 26 
11. Computation of ( t™~ 2.6 \ Lake Michigan-Huron 30 
12. Computation of h, Lake Michigan-Huron 31 
13. Computation of I t , Lake Michigan-Huron 32 
14. Computation of 7 2 , Lake Michigan-Huron 34 
15. Barometric pressures around Lake Michigan-Huron 39 
16. Example of computation of hourly barometric effects, Harbor Beach 40 
17. Example of computation of daily barometric correction, Harbor Beach 41 
18. Example of computation of change in daily barometric corrections, Harbor Beach 42 
19. Table for computation of wind effects, Harbor Beach 43 
20. Observed and corrected elevations of water surface at the Milwaukee gage on Lake Michigan- 
Huron 45 
21. Observed and corrected elevations of water surface at the Harbor Beach gage on Lake Michigan- 
Huron 47 
22. Observed and corrected elevations of water surface at the Mackinaw gage on Lake Michigan- 
Huron 49 
23. Lake Michigan-Huron 52 
24. Observation equations, Solution V t , Lake Michigan-Huron 74 
25. Principal facts from the two final evaporation solutions 81 
26. Best values of El and E 2 82 
27. Mean residuals from Solution ^6, Lake Michigan-Huron 86 
28. Residuals of Solution Vt, Lake Michigan-Huron 87 
29. Comparison of actual with theoretical distribution of residuals of Solution Vi 89 
30. Forms of observation equations used in last seven least-square solutions on Lakes Michigan-Huron 
and Superior for determining evaporation 91 
31. Principal facts from last seven least-square solutions for determining evaporation 91 
32. Computation of evaporation curve from results of Solution BB 2 , Lake Superior 95 
33. Computation of evaporation curve from results of Solution Vi, Lake Michigan-Huron 97 
34. Study of form of observation equation of Solution BB 2 98 
35. Analysis of residuals of Solution V s , Lake Superior, for evidence of wind exponent 101 
36. Analysis of residuals of solution T&, Lake Michigan-Huron, for evidence of wind exponent 103 
37. Example of computation of n, r 2 , r s , . . . r 6 , Solution V\, Lake Michigan-Huron 108 
38. Sample of observation equations from Solution Vi, Lake Michigan-Huron Ill 
39. Final normal equations for Solution Vi, Lake Michigan-Huron Ill 
vi 
