Question: what is mscp and mhcp?
Answer: M.S.C.P is the average value in all direction. Since 1 c.p emits 4p lumens MSCP lumens / 4π MHCP. Mean hemispherical candle power MHCP upper or lower: The average candle power of light source in all direction in a plane through the center of the source and perpendicular to its axis.