The heliographic latitude dependence of the interplanetary magnetic field was studied by using simultaneous measurements taken with Pioneer 10 at 1.0--4.3 AU and with earth satellites Heos 1 and 2 at 1.0 AU during Bartels solar rotations (SR) 1896--1913. The results indicate that the greater the difference in heliographic latitude between spacecraft, the greater, on the average, is the observed difference in percentage positive polarity (fields pointing outward from the sun) per SR. In particular, the percentage of positive polarity is greater as the heliographic latitude is more northern. This result is consistent with earlier (1962--1968) evidence of the latitude dependence of dominant polarity, provided the phase shift of the dominant polarity sinusoid, which occurred between 1969 and 1972, is taken into account.