Variability of Disk Emission in Pre-main-sequence and Related Stars. IV. Investigating the Structural Changes in the Inner Disk Region of MWC 480

NASA Exoplanet Research Program [NNX16AJ75G, NNX17AF88G]; NASA Origins of Solar Systems Funding [NNG16PX39P]; National Aeronautics and Space Administration; NASA [NAS5-26555]; NASA Office of Space Science [NNX09AF08G]; NASA's Science Mission Directorate