610 



TABLE 646.— REDUCTION OF BAROMETER TO STANDARD GRAVITY (concluded) 



METRIC MEASURES 



From latitude 46° to 90°, the correction is to be added algebraically. 



Lati- 

 tude 



520 540 560 580 600 620 



660 



680 700 



720 



780 



mm mm mm mm 



45 _ .02— .02 — .03— .03- 



71 



72 

 73 

 74 



75 



76 



77 

 78 

 79 

 80 



mm mm 



.03— .03 



mm 



.03- 



mm mm mm mm mm mm mm 



.03 — .03 — .03 — .03 — .03 — .03 — .04 



+ .02 + .03 + .03 + .03 + .03 + .03 + .03 + .03 + .03 + 



.07 .08 .08 .08 .08 .09 .09 .09 .09 



.12 .12 .13 .13 .14 .14 .15 .15 .16 



.17 .17 .18 .19 .19 .20 .21 .21 .22 



.22 .22 .23 .24 .25 .26 .26 .27 .28 



.03 + .03 + .03 -f -04 + 

 .10 .10 .10 .10 

 .16 .17 .17 .18 

 .23 .23 .24 .25 

 .29 .30 .31 .31 



.04 

 .11 



.18 

 .25 

 .32 



46 

 47 

 48 

 49 

 50 



51 



52 

 53 



54 

 55 



56 + .49 + .51 + .53 + .55 + .57 + .59 + .60 + .62 + .64 + .66 + .68 + .70 + .72 + .74 



57 .54 .56 .58 .60 .62 .64 .66 .68 .70 .72 .74 .76 .78 .80 



58 .58 .60 .62 .65 .67 .69 .71 .74 .76 .78 .80 .82 .85 .87 



59 .62 .65 .67 .69 .72 .74 .77 .79 .81 .84 .86 .89 .91 .93 



60 .66 .69 .72 .74 .77 .79 .82 .84 .87 .89 .92 .94 .97 1.00 



+ .26 + .27 + .28 + .29 + .30 + .31 + -32 + .33 + .34 + .35 + -36 + .37 + -38 + -39 



.31 .32 .33 .34 .36 .37 .38 .39 .40 .42 .43 .44 .45 .46 



.36 .37 .38 .40 .41 .42 .44 .45 .46 .48 .49 .51 .52 .53 



.40 .42 .43 .45 .46 .48 .49 .51 .52 .54 .56 .57 .59 .60 



.45 .46 .48 .50 .52 .53 .55 .57 .58 .60 .62 .64 .65 .67 



+ .71 + .73 + .76 + 

 .74 .77 .80 

 .78 .81 .85 

 .82 .85 .89 

 .93 



.79 + .81 + 

 .83 .85 .88 

 .88 .91 .94 

 .92 .95 .98 

 ,96 .99 1.03 



84 + 



.87+ .89 



.91 .94 



.97 1.00 



1.01 1.04 



1.06 1.09 



+ .92+ .95+ .98+1.00+1.03+1.06 



.97 1.00 1.02 1.05 1.08 1.11 



1.03 1.06 1.09 1.12 1.15 1.18 



1.08 1.11 1.14 1.17 1.20 1.23 



1.13 1.16 1.19 1.22 1.26 1.29 



+ 1.06 +1.10 +1.14 +1.18 +1.22 +1.26 + 1.31 +1.35 +1.39 +1.43 +1.47 +1.51 +1.55 +1.59 

 1.09 1.13 1.17 1.22 1.26 1.30 1.34 1.38 1.42 1.47 1.51 1.55 1.59 1.63 

 1.12 1.16 1.20 1.25 1.29 1.33 1.37 1.42 1.46 1.50 1.55 1.59 1.63 1.67 

 1.14 1.19 1.23 1.28 1.32 1.36 1.41 1.45 1.50 1.54 1.58 1.63 1.67 1.72 

 1.17 1.21 1.26 1.30 1.35 1.39 1.44 1.48 1.53 1.57 1.62 1.66 1.71 1.75 



+ 1.19 +1.24 +1.28 +1.33 +1.37 +1. 

 1.21 1.26 1.31 1.35 1.40 1 

 1.23 1.28 1.33 1.38 1.42 

 1.25 1.30 1.35 1.40 1.45 

 1.27 1.32 1.37 1.42 



SMITHSONIAN PHYSICAL TABLES 



