| -40% Margin of error for season predictability on empire|
+15 on terrain with anomaly
Limited to one copy in your empire
A city improvement obtained from the Statistical Methods technology in Research Era III. Only one copy can be built in your empire at a time, but it may be rebuilt if it is destroyed.
Recent scientific improvements allow careful and accurate measurement of temperature fluctuations. Studying this data leads to improved ability to predict the arrival of the next Dark Season.