Start Stop Study X-cen Y-cen Obs. Title 17:59:57 18:46:50 HPW021VEL120x512v2_b 202.9 392.2 HOP 0420(Study of MHD Waves in the Chromosphere) 22:44:25 23:31:20 HPW021VEL120x512v2_b 200.1 392.3 HOP 0420(Study of MHD Waves in the Chromosphere)