mscope_params/neg_stain and mscope_params/phase_plate values.mscope_paramsNegative Stain Data: If Negative Stain Data is on, this indicates that there are light particles on dark background (-1). If it's off, this indicates the movies have dark particles on light background (cryo-em data, +1).Phase Plate Data: Indicates if data was collected using a phase plate.