l8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO5 



PORT BLAIR 



Site. 



The site of the observatory was changed on January i, 1939. 

 Hb was also changed from 59 ft. to 261 ft. on that date. 

 Pressure. 



The pressure readings from January 1939 to December 1940 have 

 been reduced to the old site. 

 Precipitation. 



Rainfall data, however, refer to the old site where the rain gage 

 has been kept going. (See table i, p. 19.) 



QUETTA 



Site. 



Hb was 5,405 ft. up to May 30, 1935. There were no observations 

 from May 31, 1935, to November 23, 1935. The observa- 

 tory was restarted on November 24, 1935, at a new site and 

 Hb was 5,540 ft. from this date to August 10, 1939, ^^"^ 

 5,490 ft. thereafter. All the pressure data have been reduced 

 to 5,490 ft. which is the height for which the data up to 

 1930 have been published in the two preceding volumes of 

 World Weather Records. 



Remarks. 



The time of observation was changed from 7^ L.M.T. to 8^ L.M.T. 

 on January i, 1938. The following corrections were applied 

 to the pressure data to reduce the S^ L.M.T. data to y^ 

 L.M.T. (Local Meridian Time) : 



Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec. 

 tn. —.018 —.015 —.016 —.013 —.009 —.010 —.009 -.012 -.013 -.015 -.015 -.018 



The temperature data up to May 1935 have been reduced by 

 suitable corrections, derived from comparative observations, 

 to correspond to the previous site. No corrections are avail- 

 able, however, for the later changes of site. (See table i, 

 p. 19). 



Site. 



SHILLONG 



Hb was changed from 4,920 ft. to 4,921 ft. on June 9, 1929. The 

 pressure data from June 1929 to December 1930 published 

 on page 132 of World Weather Records (Smithsonian Misc. 

 Coll., vol. 90) require a correction of -f-.ooi. The present 

 data for 193 1 -1940 have been reduced to 4,920 ft. 



