At the end of 1877 installed automatic instruments. Temperature: The thermometer was hanging in a wooden box with shutters in the east and west face and open the south face. The box was at the exterior or a window oriented to the south located 1.5m above the ground and 50cm distant from the window. The thermometer was constructed by the Negrtti and Zambra. About the Monthly mean temperature, during the first five Years the thermometer was observed at 7, 14, 21 these observations have been corrected by the automatic observations during 1878-1887. The correction were January (-0.5), February (-0.26), March (-0.1), April (-0.07), May (-0.25), June (-0.24), July (-0.18), August (-0.07), September (-0.19), October (-0.45), November (-0.57) and December (-0.58). Solar irradiation: Measured with thermometers in a black storage and vacuum, constructed by Negretti and Zambra, the thermometer was 0.25 cm above the grass and it is exposed from 9 to 16 the non-completely covered Days. We have rescued the Monthly max observed. Barometer: From 1873 to 1877 the mean is the result of the three observations taken at 7h, 14h, 21h. The instrument used during this period was: i) from the 1872 to 31st May 1875 a Fortin barometer that's required a correction of +0.64mm, ii) from 1st June 1875 to end of 1877 used another fortin barometer that needs a correction of +0.01mm. From 1878 to 1883 used an automatic aneroid barometer that recorded the pressure each hour. During 1886 and 1887 used the Sprung barograph. The 20th of May 1885 the barometer was moved to a different place. All the correction for the use of the different barometers and the change of location have been corrected by the author. Solar Brightness: Monthly hours of sun registered by the heliograph from March 1886 to December 1888. The heliograph was constructed by Negretti and Zambra. Precipitation [mm]: The rain gauge has a 12cm diameter and is located 1.7m above the ground. The stronger snowfall was 1st August 1877 from the 5 to 10 in the morning arriving to 26 cm depth. Evaporation: Two evaporimeters with a circumference of 314cm and 10cm height one at sun and one at shade.---The data of this dataset might have been revised during the review process. This might therefore be an old version. To be sure, please check the respective dataset at doi:10.1594/PANGAEA.871480