AAVSO Sudden Ionospheric Disturbance Report October 2017 Observers: A118 A119 A120 A122 A125 A131 A134 A136 A138 A141 A142 A143 A147 A149 A94 A96 A97 YYMMDD Event Peak Importance 171005 1341 1+ 171005 1356 2 171006 1634 1- A97 - XRA 171020 2328 2 171020 2342 2 A147 - XRA 171020 2342 2 A147 - XRA 171020 2343 3 A147 - XRA ************************************************** Importance Summary - Oct 2017 1- events: 1 1 events: 0 1+ events: 1 2 events: 4 2+ events: 0 3 events: 1 3+ events: 0 ------------------ Total events: 07