MODERATE SUDDEN IMPULSE DETECTED (52nT) IN IPS MAG DATA 21 10 01 1648UT Mean Mag Parameters Pre/Post Impulse: Pre Post Pre/Post Stn Unit Impulse Impulse Change dwn nT 56.4 102.6 46.3 hbt nT 76.9 129.7 52.8 cbr nT 15.0 73.7 58.6