The lighter liquid layer and the interphase layer in a basket centrifuge, rotating at a speed of 1000 rpm, are 0.1025 m and 0.105 m away from the center, respectively. Considering the densities of lighter and heavier liquids as 920 kg m^-3 and 1015 kg m^-3, the differential pressure in horizontal direction required to maintain the interphase layer in kPa is _______. (rounded off to 3 decimal places, Consider π = 3.14)