The value obtained by an actual measurement or observation (as opposed to a theoretical or estimated value).
このグラフは理論値と実測値を比較したものだ。
This graph compares theoretical values with measured values.
実測値は予想よりも高かったため、モデルを調整する必要がある。
The measured values were higher than expected, so the model needs to be adjusted.
気象庁の実測値に基づいて、警報が出された。
A warning was issued based on the Meteorological Agency's observed measurements.