BAROMETRIC PRESSURES ON THE GREAT LAKES 



27 



there was also a rather rapid change in the barometric difference in the 

 meridian, difference 3-6, between 8 a.m. and 8 p.m. on September 8 from 

 which the term b n i in the September 9 observation equation is derived. 



TABLE No. 3. 



Table No. 4 shows the observed elevations referred to mean sea-level of 

 the water surface at the Milwaukee gage, the observed rise of water surface 

 for each day, the corrections to observed rise for known inflow, outflow, and 

 rainfall on the lake surface, the corrections to the observed rise for wind 

 effects, and the corrected rise as used in the observation equations as the / 

 term. 



3 



