For 253 of the 420 ATS 6 Pc 3 events discussed in a previous paper, simultaneous IMF data from IMP J are available. By combining these two data sets an examination of the relationship between pulsation and IMF parameters is done for the first time using pulsation observations by a spacecraft in the magnetosphere. The results of this study indicate that within statistical errors, Pc 3 occur with approximately equal probability for normal IMF conditions. There is an indication of a preference for the toward spiral angle. No relationship between the pulstion frequency and the IMF magnitude was seen, but there is a clear, although weak, relationship between the angle of the IMF from the sun-earth line and the amplitude of the pulsations. Comparison of these results to those obtained by other researchers indicates that the different methods of analysis used are not yet sophisticated enough to deal with the obviously complex phenomenon involved.