BEN NEVIS OBSERVATORY. 



Monthly and Annual Mean Values at Ben Nevis Observatory, 4407 feet, and at 

 Fort- William Observatory, 42 feet above Sea Level. 



313 



1891. 



WIND FORCE— BEN NEVIS. 





Mid- 

 night. 



1 



2 



3 



4 



5 



6 



7 



S 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



21 



22 



23 



Mid- 

 night. 



Mean. 



Jan. . 

 Feb. . 

 Mar. . 



2-40 



2'91 

 2-66 



2-42 

 2-79 

 2-50 



2-74 

 3-02 

 2-77 



2-85 

 2-77 

 2-56 



2-81 

 2-84 

 2-69 



2-63 

 2-59 

 2-73 



2-50 

 2-50 

 2 66 



2-60 

 2-48 

 258 



2-65 

 2-70 

 2-89 



2-50 

 2-50 

 2-77 



2-22 

 2-54 

 2-65 



2-29 

 2-55 

 2-71 



224 

 2-71 

 2-60 



223 

 2-34 

 2-50 



221 

 2-57 

 2-24 



2-23 

 2-80 

 218 



2-35 

 2-82 

 2-21 



1-92 

 2-50 

 2-27 



2-00 

 2-32 

 2-37 



1-95 

 2-48 

 2-56 



2-15 

 2-61 

 2-42 



2-32 

 2-89 

 2-56 



2-13 

 2-82 

 2-55 



2-29 

 2-64 

 2-56 



2-31 

 2-96 

 2-65 



2-30 

 266 

 2-55 



Apr. . 



May . 

 June . 



3-25 

 221 

 2-82 



3-02 

 2 10 

 3-00 



2-92 

 2-23 

 303 



3-07 



2-40 

 2-82 



2-95 



2'27 

 2-60 



2-90 

 2-37 



2-47 



3-02 



2-21 

 2-40 



2-82 

 2-35 



2-20 



2-97 

 2-34 

 2 32 



2-83 



2'21 

 2-2S 



2-88 

 2-34 

 2-20 



2-83 

 2-37 



2-28 



2-60 

 2-32 



2 12 



278 

 2-13 

 2-27 



2-53 

 1-98 

 2-15 



2-70 

 1-87 

 2-03 



2-80 

 1-84 

 2-07 



2-55 

 2-10 

 2-10 



2-73 

 2-03 

 2-12 



2-78 

 2-18 

 2-15 



2-97 

 2-05 

 2-15 



313 

 2-00 

 2-15 



3-25 

 2-00 

 2-32 



3-17 

 2-18 

 2-53 



3-25 

 2-27 

 2-75 



2-90 

 2-17 

 2-3C 



July . 

 Aug. . 



Sept. . 



1-95 

 202 

 2-43 



1-85 

 1-82 

 2-32 



2-08 

 2-00 

 2-38 



2-08 

 1-68 

 255 



1-95 

 1-94 

 2-52 



1-87 

 2-23 

 2-28 



2-06 

 2-18 

 2-38 



1-63 

 2-23 

 2-30 



1-55 

 211 



2-43 



1-40 

 2-13 

 2-45 



1-60 

 1-92 

 2-45 



1-45 

 1-74 

 2-33 



1-35 

 1-89 

 2'22 



1-19 

 1-84 

 2-07 



1-16 

 1-65 



2-17 



1-47 

 1-53 

 2"42 



1-37 

 1-61 

 2-25 



1-34 

 1-82 

 2-22 



1-21 

 1-89 

 2-17 



1-23 



1-77 

 2-02 



1-69 

 1-58 

 2-30 



179 

 1-53 

 2-48 



2-02 

 1-71 



2-40 



1-97 

 1-97 

 2-43 



1-90 



2-00 

 2-45 



1-63 



1-87 

 2-33 



Oct. 

 Nov. . 

 Dec. . 



3*35 



2-57 

 2'S9 



319 

 2-65 

 2-98 



3-05 



2-85 

 2-89 



269 

 2-75 

 3-03 



2-74 

 2-73 

 2-97 



2-95 

 2-73 

 2-53 



2-52 

 2-73 

 2-40 



2-56 



2-82 

 2 40 



2-82 

 2-65 

 2-52 



2-62 

 2-77 

 2-55 



2-65 

 2 85 

 2-47 



2-63 

 2-82 

 2-61 



2 71 



2-72 

 2-85 



2-62 



2-48 

 2-71 



2-81 

 2 32 

 2-84 



302 

 2-38 

 2-76 



3-10 

 232 

 2-95 



3-05 

 2-47 



s-oo 



2-81 

 2-38 



2-71 



3-08 

 2-27 

 2-69 



3-35 

 2-40 

 2-81 



3-61 



2-62 

 2-90 



3-66 

 2-53 

 2-95 



3-60 

 2-37 

 2-81 



3-42 

 2-55 

 2-82 



2-97 

 2-59 

 2-76 



Year . 



2'ii2 



2-55 



2-66 



2-60 



2-58 



2-52 



2-46 



2-42 



2-50 



2-42 



2-40 



2-38 



2-36 



2-26 



2-24 



2-28 



2-31 



2-28 



2-23 



2-26 



2-37 



2-50 



2-53 



2-54 



2-61 



2-43 



WIND DIRECTIONS— BEN NEVIS. 





January. 



February. 



March. 



April. 



May. 



June. 



July. 



August. 



September. 



October. 



November. 



December. 



Year. 



N . . . . 



134 



59 



317 



119 



196 



112 



252 



166 



69 



58 



97 



87 



1666 



NE . 



96 



11 



130 



61 



99 



45 



63 



34 



34 



11 



13 



28 



625 



E . . . . 



13 



4 



48 



191 



108 



173 



60 



53 



5 



69 



68 



6 



798 



SE . 



46 



27 



46 



150 



154 



129 



65 



83 



71 



159 



159 



60 



1149 - 



s . 



74 



125 



31 



24 



57 



53 



38 



68 



111 



167 



106 



114 



968 



sw .... 



182 



229 



30 



59 



30 



44 



103 



126 



156 



128 



133 



233 



1453 



w . 



92 



149 



51 



31 



21 



80 



54 



113 



172 



74 



66 



133 



1036 



N\V. 



86 



64 



63 



16 



32 



44 



42 



52 



88 



25 



42 



64 



618 



Calm or Var. . 



21 



4 



28 



69 



47 



40 



67 



49 



14 



53 



36 



19 



447 



HOURS OF SUNSHINE— BEN NEVIS. 



■January 



February 



(larch 



Vpril 

 lay . 

 une . 



uly . 



LUgUSt 



eptemher 



ictober 

 November 



•ecember 



2-32 

 0-16 



2-48 



2-34 

 9-60 



14-02 



3-80 

 4-40 

 12-90 



3-36 



24-46 



0-96 



699 



653 



13-91 



4-08 

 0-49 

 1-51 



34-47 



2-38 

 771 



8-48 



8-37 



13-82 



5-51 

 1-09 

 2-95 



2-42 



0-81 



0-34 

 6-44 

 8-78 



10-32 

 7-56 

 13-80 



6-63 



2-85 

 4-62 



3-95 

 3-70 

 0-34 



69-33 



1-89 

 10-20 

 9-58 



8-36 



6-29 



13-63 



311 

 5-31 



6-65 

 5-00 

 2-50 



78-91 



1-70 

 10-16 

 10-71 



9-70 

 8-05 

 13-89 



6-49 

 4-12 

 5-15 



7-71 

 4-26 

 5-43 



87-37 



12 



13 



14 



15 



16 



1-77 

 10-61 

 10-83 



2-92 

 9-85 

 9-14 



2-93 

 10-51 

 9-00 



1-89 

 10-77 

 7-70 



0-71 

 9-38 

 8-74 



11-25 

 8-79 

 14-31 



11-26 

 7-87 

 12-18 



9-85 



7-30 

 12-88 



9-14 

 6-52 

 13-62 



6-56 

 7-19 

 1640 



6-78 

 4-25 

 5-41 



6-49 

 5-97 

 4-19 



6-81 

 5-19 

 4-21 



7-66 

 5-11 

 4-27 



5-65 

 3-89 

 4-02 



8-97 

 4-01 

 4-31 



7-72 

 4-27 

 4-17 



8-27 

 3-36 

 3-80 



9-31 

 3-00 

 3-10 



5-57 

 2-26 



91-29 



86-03 



84-11 



82-09 



70-37 



17 



18 



6-03 

 6-83 



5-55 



5-46 

 13-77 



4-12 

 3-95 

 2-92 



0-28 



0-20 

 2-62 



6-12 



8-37 

 12-24 



3-38 

 2-92 

 1-85 



19 



1-80 

 6-76 

 13-26 



4-26 



0-88 



48-91 37-70 20-96 14-56 1-03 



20 



2-30 

 8-90 



3-09 

 0-27 



21 



0-40 

 0-63 



Total. 



14-15 

 86-53 

 92-60 



109-18 

 104-10 

 211-83 



83-57 

 44-09 

 46-41 



60-85 

 30-67 

 23-65 



907-63 



Percentage 

 of Possible. 



HOURS OF SUNSHINE— FORT- WILLIAM. 



anuary . 

 ebruary . 

 arch 



pril . 



ay . . 

 ine. 



ily . . 



ugust 

 ptember 



tober . 

 ivember 

 Bcember. 





_ 



- 



_ 



0-01 



1-64 



0-32 

 10-49 



4-90 



11-86 



1-93 

 8-44 

 13-34 



6-53 

 9 33 



14-74 



7-11 



9-58 

 15-87 





: 



32 



6-74 



0-48 



6-67 



14-78 



8-31 



11-59 

 16-82 



11-99 

 13-93 

 16-85 



13-68 

 13-20 

 17-04 



14-74 

 13-65 

 17-51 



16-02 

 15-75 

 15-58 



17-69 

 16-03 

 16-02 



15-13 



15-01 

 16-54 





- 



0-02 



1-65 

 0-13 



3-96 

 3-27 

 0-30 



6-72 

 4-97 

 408 



8-74 

 6-88 

 5-93 



10-06 

 6-92 

 8-08 



9-92 

 9-18 

 10-78 



9-11 

 8 24 

 8-46 



9-95 

 8-03 

 9-27 





- 



- 



- 



- 



- 



3-67 



11-50 

 69 



14-97 

 4-52 

 0-04 



17-20 

 660 

 3-14 



14-79 

 6-26 

 311 





- 



7-08 



23-71 



44-26 



60-18 



79-95 



99-91 



120-47 



133 09 



13065 



5-73 : 3-00 



9-88 j 8-53 



13-09 14 37 



16-28 

 15-76 

 16-43 



14-50 

 14-84 

 17-18 



11-73 i 12-91 

 8-94 10-12 

 9-42 8"22 



14-99 

 4-03 

 2-46 



128 74 



13-15 

 2-81 

 0-71 



120-34 



0-03 

 4-32 

 14-28 



0-79 

 10-32 



217 



_ 



- 



_ 



24-33 



56-09 



122-18 



12-20 

 14-39 

 17-62 



8-33 

 14-37 

 16-04 



8-50 

 11-21 

 15-29 



1-15 



6-10 



12-93 



0-06 

 4-26 



- 



159-00 

 182-88 

 237-63 



8-98 

 8-94 

 7-44 



7-51 

 8-44 

 5-27 



6-24 

 6-72 

 1-25 



7-50 

 1-47 



1-19 



- 



116-19 

 92-25 

 78-50 



7-18 

 0-55 



1-00 



: 



- 



: 



- 



98 45 

 25-46 

 9-46 



95-93 



7207 



51-38 



29-15 



5-51 



- 



1202 42 



6 

 33 

 25 



26 

 20 

 40 



16 

 9 

 12 



19 

 13 

 11 



20 



16 

 28 

 40 



44 

 41 



51 



25 

 23 

 25 



39 

 15 



S 



33 



ROY. SOC. TRANS. EDIN. — VOL. XLII. 



2 s 



