Start Stop Study X-cen Y-cen Obs. Title 18:16:58 19:03:51 HPW021VEL120x512v2_b -73.0 -497.0 HOP 420 (Study of MHD Waves in the Chromosphere) AR 20:56:16 21:43:10 HPW021VEL120x512v2_b -74.8 -497.0 HOP 420 (Study of MHD Waves in the Chromosphere) AR