LXX. 



Russia. — Helsingfors. Lat. 60° 10' N. Long. 24° 57' E. Greenw. 



Corrections to be applied to the Means of the Hours of Observation to obtain the true 

 Mean Temperatures of the respective Days, Months, and of the Year. — Dove. 



Degrees of Reaumur. 



Hours. 



Morn. 1 

 2 

 3 

 4 



5 

 6 



7 



9 

 10 

 11 



Noon. 



9 

 10 

 11 



Midn. . , 



6. 6 



7. 7 



8. 8 



9. 9 

 10.10 



7. 2. 9 

 6. 2. 8 

 6. 2.10 



6. 2. 6 



7. 2 



8. 2 

 8. 1 



7. 1 



9.12.3.9 

 7. 2.2(9) 



DaiI.ext. 



Jan. 



0.47 

 0.79 

 0.99 

 1.13 



1.06 

 0.86 

 0.58 

 0.28 



0.01 

 -0.23 



-0.48 

 -0.70 



-0.86 

 -0.92 

 -0.84 

 -0.73 



-0.52 

 -0.32 

 -0.19 

 -0.15 



-0.16 

 -0.16 

 -0.06 

 0.16 



0.27 

 0.20 

 0.07 

 -0.08 

 -0.21 



-0.17 

 -0.07 

 -0.07 

 -0.13 



-0.17 

 -0.32 

 -0.29 

 -0.14 



-0.42 

 -0.17 



0.11 



Feb. March, 



0.85 

 1.25 

 1.55 

 1.71 



1.66 

 1.43 

 1.07 

 0.60 



0.10 



-0.42 



-0.91 



1.29 



-1.54 

 -1.60 

 -1.47 

 -1.20 



-0.87 

 -0.57 

 -0.38 

 -0.25 



-0.18 

 -O.OS 

 0.12 

 0.44 



0.43 

 0.35 

 0.18 

 -0.04 



1.40 

 1.86 



2.28 

 2.52 



2.49 

 2.16 

 1.57 

 0.79 



-0.05 

 -0.87 

 -1..56 

 -2.06 



-2.36 

 -2.45 

 -2.32 

 -2.01 



-1.56 

 -1.07 

 -0.60 

 -0.20 



0.10 

 0.36 

 0.63 

 0.96 



0.55 

 0.49 

 0.30 

 0.03 



-0.25 -0.26 



-0.24 



-0.14 -0.16 



-0.08 

 -0.25 



-0.27 

 -0.50 

 -0.47 

 -0.24 



-0.71 

 -0.22 



0.06 



-0.26 



0.02 

 -0.45 



-0.44 

 -0.83 

 -0.79 

 -0.40 



-1.08 

 -0.17 



0.04 



April, 



2.10 

 3.18 

 2.79 

 2.77 



2.41 

 1.76 

 0.92 

 0.05 



-0.74 

 -1.35 

 -1.80 

 -2.10 



-2.30 

 -2.37 

 -2.31 

 -2.10 



-1.73 

 -1.25 



-0.72 

 -0.21 



0.26 

 0.69 

 1.13 

 1.60 



0.26 

 0.10 

 -0.08 

 -0.24 

 -0.33 



-0.40 

 -0.27 

 0.03 

 -0.62 



-0.73 

 -1.16 

 -1.13 

 -0.69 



-1.22 

 -0.23 



41 



May. 



June. July. 



2.49 



2.82 

 2.89 

 2.62 



2.06 



1.30 



0.49 



-0.26 



-0.87 

 -1.34 

 -1.70 



-1.98 



-2.19 

 -2.32 

 -2.31 

 -2.11 



-1.77 

 -1.30 



-0.78 

 -0.24 



0.29 

 0.82 

 1.40 

 1.97 



-0.00 

 -0.15 

 -0.25 

 -0.29 

 0.26 



-0.51 

 -0.42 

 -0.07 

 -0.77 



-0.92 

 -1.29 

 -1.23 



-0.85 



-1.22 

 -0.31 



0.29 



3.37 

 3.78 

 3.74 

 3.22 



2.32 



1.24 



0.20 



-0.65 



-1.26 

 -1.65 

 -1.93 

 -2.16 



-2.36 

 -2.51 

 -2.55 

 -2.42 



-2.13 

 -1.71 

 -1.20 

 -0.61 



0.07 

 0.87 

 1.75 

 2.63 



-0.24 

 -0.50 

 0.63 

 -0.60 

 -0..39 



0.75 

 -0.63 

 -0.13 

 -0.99 



-1.16 

 -1.58 

 -1.51 



-1.08 



-1.48 

 -0.54 



0.62 



3.16 

 3.48 

 3.45 

 3.02 



2.25 



1.23 



0.17 



-0.78 



-1.51 

 -2.02 

 -2.35 

 -2.54 



-2. 65 

 -2.66 

 -2.55 

 -2.27 



-1.85 

 -1.30 

 -0.68 

 -0.04 



0.61 

 1.27 

 1.95 

 2.61 



-0.04 

 -0.26 

 -0.41 

 -0.45 

 0.38 



0.63 

 -0.49 

 -0.05 

 -0.91 



-1.25 

 -1.72 

 -1.72 

 -1.24 



-1.50 

 -0.32 



0.41 



Aug. 



2.58 

 2.96 

 3.11 

 2.92 



2.39 



1.59 



0.64 



-0.28 



-1.07 

 -1.68 

 -2.12 

 -2.43 



-2.61 

 -2.66 

 -2.55 

 -2.26 



-1.80 

 -1.24 

 -0.62 

 -0.03 



0.52 

 1.03 

 1.54 



2.08 



0.18 

 0.01 

 -0.16 

 -0.28 

 -0.33 



-0.50 

 -0.37 

 -0.01 

 -0.77 



-1.01 

 -1.47 

 -1.45 

 -0.99 



-1.38 

 -0.25 



0.23 



Sept. 



1.60 

 2.09 

 2.48 

 2.61 



2.40 

 1.84 

 1.06 

 0.21 



-0.58 

 -1.23 

 -1.71 

 -2.04 



-2.30 

 -2.20 

 -1.92 



-1.48 

 -0.95 

 -0.42 

 -0.00 



0.31 

 0.54 

 0.79 

 1.14 



0.45 

 0.32 

 0.11 

 -0.14 

 -0.35 



-0.31 

 -0.15 

 0.03 

 -0.47 



-0.62 

 -1.05 

 -1.01 

 -0.59 



-1.13 

 -0.16 



0.16 



Oct. 



1.06 

 1.45 

 1.70 

 1.74 



1.51 

 1.10 

 0.59 

 0.08 



-0.38 

 -0.77 

 -1.07 

 -1.30 



Nov. 



-2.23 -1.42 



1.43 

 -1.30 

 -1.05 



-0.74 

 -0.44 

 -0.22 

 -0.10 



-0.03 

 0.08 

 0.29 

 0.63 



0.33 



0.19 



-0.01 



-0.21 



-0.35 



-0.29 

 -0.14 

 -0.08 

 -0.26 



-0.42 

 -0.68 

 -0.67 

 -0.42 



-0.75 

 -0.23 



0.16 



0.64 

 0.99 

 1.22 

 1.26 



1.09 

 0.76 

 0.38 

 0.02 



-0.27 

 -0.48 

 -0.64 

 -0.76 



-0.85 

 -0.S8 

 -0.82 

 -0.68 



-0.48 

 -0.28 

 -0.16 

 -0.12 



-0.12 



-0.10 



0.02 



0.28 



0.24 



0.11 



-0.05 



-0.20 



-0.29 



-0.21 

 -0.08 

 -0.07 

 -0.13 



-0.25 



0.43 



-0.42 



-0.24 



-0.49 

 -0.19 



0.19 



Dec. 



0.34 

 0.68 

 0.91 

 0.97 



0.84 

 0.59 

 0.31 

 0.07 



-0.10 

 -0.22 

 -0.32 

 -0.43 



-0.54 

 -0.61 

 -0.60 



Mean. 



-0.49 -1.60 



-0.33 

 -0.18 

 -0.11 

 -0.12 



-0.20 

 -0.2 

 19 

 0.02 



0.21 

 0.10 



-0.03 

 0.15 



-0.24 



-0.17 

 -0.05 

 -0.09 

 -0.07 



-0.15 



-0.27 



-0.24 



0.12 



-0.33 

 -0.18 



1.67 

 2.11 

 2.26 

 2.21 



1.87 

 1.32 

 0.67 

 0.01 



-0.56 

 -1.02 

 -1.38 

 -1.65 



-1.83 

 -1.89 

 -1.82 



-1.27 

 -0.88 

 -0.51 

 -0.17 



0.12 

 0.42 

 0.78 

 1.21 



0.22 



0.08 



-0.08 



-0.22 



0.30 



-0.37 

 -0.25 

 -0.05 

 -0.49 



-0.62 

 -0.94 

 -0.91 

 -0.58 



-0.98 

 -0.25 



0.18 0.19 



E 



The numbers without sign must be added ; those with the sign — must he subtracted. 



76 



