Field Efficiency (\( Fe \)):

\[ Fe = \left( \frac{efc}{tfc} \right) \times 100 \]

Where:

• \( Fe \) is the field efficiency, in percentage (%).
• \( efc \) is the effective field capacity, in square meters per hour (m²/hr).
• \( tfc \) is the theoretical field capacity, in square meters per hour (m²/hr).