Table 141 {conttntud). 



157 



POINTS. 



between the dry and the wet bulb, when the dew-point has the values given at corresponding points in the body of 

 from 76 centimetres the corresponding numbers in the lines marked ST/ SB are to be multiplied by the difierencej 

 or above 76. See examples. 



ST/SB-- 

 



3 



4 



ST/SB = 



5 



6 



7 

 8 



9 



ST/SB = 

 10 

 II 

 12 



13 

 14 



ST/SB = 

 15 

 16 



17 

 18 



19 



sr/sB = 



20 



21 



22 



23 



24 



IT/IB-- 



25 



26 



27 



28 



29 



ZT/IB-- 



30 



31 



32 



33 



34 



ZT/IB- 



35 



36 



37 



38 



39 



t — <i=9 



10 



11 



12 



13 



14 



15 



Dew-points corresponding to the difference of temperature given in the above line and the 

 wet-bulb thermometer reading given in first column. 



•45 



— 20.0 

 15.8 

 12.4 



•23 



— 19.8 



7-4 

 5-3 

 3-3 

 1.6 

 .14 

 0.0 

 + 1.8 

 3-5 



.67 



22.2 



ids 

 .29 



— 131 



lO.I 



7.6 



5-2 



3- 



•17 



— 1-3 



+ 0.3 



I I I I 



EXAMPLES. 



(i) Given i?= 72, ;'i = 10, i — ^1 = 5. 



Then tabular number for /, = 10 and t — ^i = S is 5.2 



Also 76 — 72 = 4 and S'J'I SB=i .06. 



.'. Correction =:o.o6 X 4^ 24 



Hence the dew-point is 5.44 



(2) Given ^ = 71.5, i'i = 7,/ — 2'i = 8. 



Then, as above, tabulated number = . . 3.4 



ST/SB — ■^^^■^^ — .IS 

 2 



Correction ^0.15 X 4.5^ 67 



Dew-point = 4.07 



•37 



— 177 

 134 

 10. 1 



74 

 5-1 

 .20 



— 3-0 



i.o 

 -f 0.8 



27 



4-5 

 .12 



6.2 



7.8 



94 

 10.9 

 12.4 



.08 

 13.8 



15-2 

 16.5 

 17.9 

 19.2 



.06 

 20.4 

 21.7 

 22.9 

 24.2 

 25.4 



.041 

 26.6 

 27.8 

 28.9 

 30.1 

 31.2 



029 

 324 

 33-5 

 34-6 

 357 

 36.8 



44 



— iS.i 

 135 



lO.I 



7.2 

 .22 



— 47 



2.6 



0.6 

 + 1-3 



.14 



n 

 8.5 



lO.I 



II.6 

 .09 



131 

 14-5 

 15-9 

 173 

 18.7 



.06 

 20.0 

 21.3 



23.8 

 25.0 



.047 

 26.2 

 27.4 

 28.6 

 29.8 



30-9 

 .032 



32.1 

 33-3 

 344 



35-5 

 36-6 



•54 



-18.3 



13-5 

 9.9 



•25 



— 6.8 



4-3 

 2.1 

 0.1 



+ 1-9 

 .16 



3-9 



5-8 



7-5 



9.2 

 10.8 



.10 

 12.4 

 139 

 153 

 16.8 

 18.1 



.07 

 19.5 

 20.8 



22.1 



234 

 24.6 



•053 



25.9 

 27.1 

 28.3 

 29.5 

 30.7 



•037 

 31.8 



33-0 

 34-2 

 35-3 

 36-4 



.66 



-18.3 



13-1 

 .29 



— 94 

 6-3 

 37 

 1.6 



+ 0.5 

 .18 



27 

 47 

 6.5 



8-3 

 1 0.0 



.11 

 11.6 

 13.2 

 14.7 

 16.2 

 17.6 



.08 

 19.0 

 20.3 

 21.7 

 23.0 

 24.2 



.06 



-^A 

 26.8 



28.0 

 29.2 

 30-4 



037 

 31.6 

 32.8 



33-9 

 35-1 

 36.2 



.72 



— 17.2 



■36 



— 12.5 

 8.8 

 57 

 3-1 

 0.9 

 .20 

 + 1-3 

 3-5 

 5-5 

 74 

 9.1 



•13 



108 

 12.5 

 14.0 



157 

 17.0 

 .09 

 18.5 

 19.9 

 21.2 

 22.6 



23-9 

 .07 



25.2 

 26.4 



27-7 

 28.9 

 30.1 



.04 

 31-4 

 32.5 

 33-7 

 34-8 

 36.0 



Smithsonian Tables. 



