AAVSO Sudden Ionospheric Disturbance Report Observer: A118 Station: BZ20 40 130223 1600 1625 1605 1 3BZ20 A118 -- 130223 1559 1615 1605 1- 3CV20 A118 -- 130223 1603 1615 1605 1- 2HO23 A118 -- 130223 1559 1630 1605 1+ 3AA24 A118 -- 130223 1602 1620 1605 1- 1BB27 A118 -- 130223 1558 1625 1605 1+ 3RK38 A118 -- 130223 1559 1625U1605 1+ 2CF78 A118