Istanbul University Faculty of Science

SOLAR OBSERVATIONS

Istanbul University Observatory · Sunspot observations since 1950

Observatory

Monthly Sunspot Classification and Coordinates

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March 2014 Monthly report →

Each group: class – number of spots (B, ΔL). NS: No sunspot.

DrawingDayRClassification and Coordinates
02 151 EAI – 21 (-23, 24.6E), HK_ – 6 (-12, 8.7E), CAI – 8 (-16, 1.4E), AX_ – 1 (-19, 24.7W), HS_ – 3 (-8, 36.7W), HS_ – 7 (-1, 37.1W), CRO – 2 (-10, 68.5W), BXO – 3 (14, 66.7E), CAI – 10 (17, 15.1E)
03 255 AX_ – 1 (-14, 8.7W), AX_ – 2 (-11, 29.2E), EAI – 31 (-25, 12.3E), HK_ – 3 (-13, 3.8W), AX_ – 6 (-17, 7.6W), BXI – 10 (-18, 12.5W), AX_ – 1 (-19, 38.8W), CSO – 9 (-2, 46.7W), AX_ – 2 (-8, 50.2W), AX_ – 1 (-10, 75.9W), AX_ – 1 (10, 67.6E), BXI – 14 (14, 52.2E), AX_ – 8 (17, 1.4W), AX_ – 3 (6, 25.7W), CAO – 13 (7, 31.9W)
04 168 EAI – 26 (-25, 1.3W), HA_ – 5 (-13, 17.7W), AX_ – 3 (-16, 20.2W), AX_ – 1 (-13, 22.1W), BXI – 8 (-17, 24.9W), HS_ – 1 (-7, 65.1W), HS_ – 1 (-2, 65.3W), BXI – 11 (15, 38.7E), BXI – 5 (17, 13.2W), BXI – 7 (7, 44.3W)
05 208 AX_ – 2 (-16, 34.1W), AX_ – 2 (-12, 36.3W), HA_ – 2 (-9, 73E), AX_ – 1 (-12, 62.4E), AX_ – 1 (-9, 61.8E), BXI – 5 (-16, 29.4E), ESI – 17 (-25, 16.8W), HS_ – 5 (-13, 33W), AX_ – 3 (-18, 40W), HA_ – 1 (-3, 79.9W), ?__ – 1 (-7, 80.5W), BXI – 19 (14, 23.4E), BXI – 6 (16, 25.6W), BXI – 3 (6, 62.9W)
06 159 CSI – 13 (-9, 63.4E), AX_ – 1 (-11, 52.7E), AX_ – 1 (-9, 49.7E), BXI – 11 (-15, 18.2E), ESI – 20 (-25, 27.9W), HS_ – 6 (-13, 43.7W), AX_ – 2 (-15, 43.8W), HS_ – 3 (-13, 47W), CSI – 12 (15, 13.6E)
07 167 CAO – 5 (-9, 50.7E), BXO – 9 (-11, 38.4E), BXO – 11 (-16, 5E), CAO – 7 (-25, 39.6W), AX_ – 1 (-15, 57.4W), HS_ – 2 (-13, 57.5W), AX_ – 1 (-12, 62.5W), CAI – 5 (-17, 64.7W), CAI – 22 (14, 0.3W), BXO – 4 (19, 40.4W)
12 156 EAI – 7 (14, 69.5W), CAI – 27 (5, 28W), CAI – 9 (-8, 14.8W), EAI – 37 (-18, 20.3E), AX_ – 1 (-8, 46.3E), AX_ – 1 (14, 84.2E), BXO – 4 (-19, 62.7W)
13 147 AX_ – 1 (-9, 30.2E), EAC – 36 (-18, 4.2E), AX_ – 5 (-9, 32.2W), BXO – 3 (-10, 54.4W), HS_ – 1 (13, 65.4E), AX_ – 2 (16, 32.2W), DAI – 17 (6, 44.7W), ?__ – 2 (14, 82.2W)
14 166 AX_ – 5 (-11, 14.7E), EAC – 37 (-19, 6.3W), AX_ – 6 (-9, 42.6W), AX_ – 2 (-10, 64.9W), ?__ – 2 (11, 73.6E), HS_ – 1 (13, 54.5E), AX_ – 1 (16, 44.1W), BXI – 10 (11, 51.9W), CAI – 12 (5, 55W)
15 123 EAI – 41 (-19, 19.7W), AX_ – 1 (-12, 55.2W), AX_ – 3 (10, 60.8E), HS_ – 1 (12, 41.6E), DAI – 6 (9, 64.3W), DAI – 11 (3, 66W)
17 159 ?__ – 1 (-9, 84.9E), AX_ – 1 (-14, 72.7E), AX_ – 2 (-22, 59E), HR_ – 1 (-10, 55.5E), AX_ – 1 (-14, 46.9E), AX_ – 1 (-9, 40.7E), BXO – 6 (-11, 17.5W), EAI – 21 (-19, 45.3W), BXO – 5 (12, 34.8E), CAO – 5 (13, 15.9E), BXO – 5 (14, 6W)
18 209 AX_ – 2 (-9, 71.1E), AX_ – 1 (-26, 66.9E), BXI – 14 (-14, 64.1E), BXO – 3 (-21, 45.5E), BXI – 4 (-11, 40.9E), AX_ – 2 (-15, 33.5E), BXI – 4 (-7, 11W), BXI – 16 (-11, 30.7W), AX_ – 1 (-13, 41.4W), CAI – 16 (-19, 57.8W), ?__ – 1 (14, 78.6E), BXI – 5 (11, 21.7E), CSI – 10 (13, 3.7E)
19 160 BXO – 1 (-14, 86.2E), BXO – 2 (-10, 58.8E), CAI – 16 (-16, 49.4E), AX_ – 1 (-12, 29.5E), CRI – 6 (-10, 16.8E), CAI – 13 (-8, 25.4W), CRI – 14 (-11, 44.6W), DRO – 3 (-20, 73.3W), HR_ – 1 (14, 66E), CSI – 3 (12, 10W)
20 161 HA_ – 2 (-14, 70.4E), CAI – 25 (-15, 36.4E), DAI – 11 (-10, 6.5E), CAI – 33 (-8, 40.1W), CRI – 11 (-12, 57.6W), AX_ – 1 (14, 52.3E), HS_ – 1 (12, 24W), ?__ – 7 (-11, 74.4E)
21 186 AX_ – 1 (-1, 68E), CAO – 12 (-12, 58.9E), DAI – 16 (-14, 23.6E), BXO – 4 (-12, 2.9W), BXI – 16 (-10, 9.7W), AX_ – 2 (-11, 21.4W), DAO – 13 (-8, 54W), ?__ – 5 (-11, 70.8W), HA_ – 2 (14, 38.6E), AX_ – 3 (11, 16.1W), HS_ – 2 (12, 37.6W)
22 162 AX_ – 1 (-1, 53.8E), CAO – 9 (-12, 44.6E), AX_ – 2 (-29, 17.1E), DAI – 22 (-15, 10.1E), HA_ – 4 (-15, 17.1W), CRO – 5 (-10, 23.3W), AX_ – 1 (-10, 42.2W), DSO – 5 (-8, 67.6W), HS_ – 1 (11, 68.3E), HS_ – 1 (14, 25.1E), HS_ – 1 (11, 50.2W)
23 88 CSI – 5 (-12, 29.6E), CSI – 13 (-13, 2.6W), HS_ – 4 (-16, 32.2W), AX_ – 1 (12, 54.9E), AX_ – 3 (16, 12E), AX_ – 2 (12, 61W)
24 159 DSI – 26 (-13, 18.9E), DAI – 33 (-15, 15.4W), AX_ – 2 (-12, 36.3W), HA_ – 2 (-16, 45.2W), AX_ – 4 (4, 48.3E), DSO – 9 (11, 43.5E), AX_ – 2 (16, 1.7W), HS_ – 1 (11, 76.3W)
25 137 CSI – 27 (-14, 5.8E), HR_ – 3 (-15, 59.2W), DAI – 24 (-15, 30.7W), BXI – 6 (4, 34.8E), CAO – 15 (10, 30.2E), AX_ – 2 (14, 14.3W)
26 97 AX_ – 1 (-15, 70.5W), CAI – 8 (-14, 42.7W), CSI – 12 (-14, 11.9W), AX_ – 2 (-11, 2.8W), BXI – 6 (3, 19.9E), CAI – 8 (10, 16.7E)
27 136 BXI – 3 (-13, 39.9E), BXI – 3 (-23, 16.3W), ESI – 16 (-13, 19.7W), CAI – 15 (-15, 55.3W), AX_ – 1 (-9, 65.5W), CRI – 11 (3, 7.5E), CSI – 17 (10, 4.3E)
28 150 BXI – 5 (-12, 55.6E), BXI – 7 (-22, 14.3E), CSI – 26 (-13, 36W), CRI – 7 (-14, 71.5W), HA_ – 1 (18, 70.2E), BXO – 16 (4, 8.3W), CAO – 18 (11, 13.3W)
29 171 DAO – 14 (-13, 44E), AX_ – 1 (-7, 21.3W), CSO – 16 (-14, 52.8W), BXO – 6 (-16, 70.8W), AX_ – 1 (-29, 75.4W), ?__ – 2 (-14, 81.2W), HS_ – 1 (18, 58.8E), AX_ – 3 (18, 28.3E), BXO – 7 (4, 21.7W), CAI – 20 (10, 26.4W)
30 79 CAI – 9 (-15, 32.6E), BXI – 2 (-25, 9.2W), CAI – 6 (-14, 66.5W), AX_ – 1 (17, 46.5E), DAI – 11 (9, 38.3W)
31 129 CAI – 9 (-10, 76.8E), DAI – 15 (-13, 20.7E), AX_ – 2 (-12, 13.2W), BXO – 2 (-24, 21.5W), AX_ – 1 (-7, 64.6W), ?__ – 3 (-14, 81.2W), ?__ – 1 (13, 81.5E), HS_ – 1 (17, 34.6E), CAO – 5 (10, 52.7W)