340 Report of the Kew Committee. 



Table III. — Hourly Means of the Horizontal Force in C.G.S. units 



Hours 



Mid. 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 



10. 



11. 





0-18000 + 







Winter. 

















1892. 





























Months. 





























Jan. . . 



188 



189 



191 



190 • 



194 



195 



194 



194 



189 



184 



176 



172 





Feb. .. 



195 



190 



195 



189 



187 



189 



189 



195 



194 



186 



179 



175 





March . 



193 



193 



191 



192 



192 



198 



201 



193 



186 



172 



169 



164 





Oct. .. 



209 



208 



210 



212 



212 



213 



214 



212 



204 



192 



183 



182 





Nov. .. 



222 



220 



221 



224 



225 



226 



227 



227 



222 



213 



209 



208 





Dec. .. 



210 



209 



210 



211 



216 



216 



218 



218 



215 



212 



206 



204 





Mean. 



203 



202 



203 



203 



204 



206 



207 



207 



202 



193 



187 



184 





Summer. 





April . . 



201 



201 



200 



200 



199 



199 



198 



194 



186 



175 



166 



166 





May . . 



219 



216 



213 



214 



212 



214 



208 



200 



190 



183 



181 



184 





June . . 



224 



221 



221 



221 



221 



219 



213 



203 



194 



190 



191 



200 





J uly . . 



201 



200 



198 



198 



197 



194 



189 



183 



179 



174 



167 



168 





Aug. .. 



207 



208 



206 



206 



205 



203 



202 



193 



182 



171 



168 



171 





Sept. . . 



196 



196 



194 



193 



193 



192 



189 



179 



169 



164 



162 



168 





Mean . . 



208 



208 



205 



205 



204 



204 



200 



192 



183 



176 



172 



176 





Note. — During July, August, and September the Horizontal Force Magnetograph was at 

 quiet days (August 30) this disturbance was such as to make the indications of the instrument 

 August depends on four days only. 



Table IV. — Diurnal Range of the Kew 



Hours. 



| Mid. 



1. 



2. 



3. 



4. 



5. 



6. 



7. 



8. 



9. 



10. 



11. 





Summer mean. 





+ -00007 



+ '00007 



+ -00004 



+ -00004 



+ -00003 



+ -00003 



- -00001 



- -00009 



- -00018 



- -00025 



- -00029 



- -00025 



Winter mean. 





+ -00001 



•00000 



+ -00001 



+ -00001 



+ -00002 



+ -00004 



+ -00005 



+ -00005 



•00000 



- -00009 



- -00015 



- -00018 



Annual mean. 





4- -00004 



+ '00004j+ -00003 



+ -00003 



+ -00003 



+ '00004 



+ -00002!- -00002 



-•00009|- 00017 



- -00022 



- -00021 



Note.— When the sign is + the 



