Table 6

of the radio burst types occurrence in % related to strong and weak proton events in the three periods of interest. See Table 4 for further explanations.

Radio burst Radio wavelength

dm dm-m m m-Dm DH-km
Strong proton sample (1996−2016): 201 events
II 0 9±2 (0/1/8) 54±6 (20/2/32) 74±8 (46/4/24) 79±8 (69/4/6)
III 16±3 (3/2/11) 37±5 (15/21/12) 79±8 (60/4/15) 89±9 (76/2/11) 99+1/−10 (97/2/0)
IV 54±6 (50/1/3) 60±7 (53/3/4) 69±8 (54/3/12) 72±9 (53/4/15) 19±3 (14/4/1)
II + III + IV 0 10±2 40±5 60±7 18±3
Weak proton sample (1996−2016): 230 events
II 0 7±2 (0/0/7) 35±5 (15/1/19) 54±6 (37/2/15) 44±5 (33/4/7)
III 9±2 (1/1/7) 26±4 (10/2/14) 70±7 (42/2/26) 83±8 (58/2/23) 99+1/−9 (93/6/0)
IV 39±5 (34/3/2) 48±6 (36/5/7) 50±6 (31/4/16) 53±6 (32/3/18) 11±2 (2/4/5)
II + III + IV 0 2±1 21±3 36±5 9±2
Strong proton sample in SC23 (1996−2008): 130 events
II 0 12±3 (0/1/11) 64±9 (26/0/38) 76±10 (49/2/25) 76±10 (66/1/9)
III 20±4 (4/0/16) 36±6 (15/0/21) 83±11 (63/2/18) 92+8/−12 (80/1/11) 99+1/−12 (98/1/0)
IV 60±9 (55/0/5) 62±9 (54/2/6) 69±9 (52/0/17) 76±10 (54/4/18) 22±5 (17/5/0)
II + III + IV 0 6±2 45±7 62±9 21±4
Weak proton sample in SC23 (1996−2008): 173 events
II 0 9±2 (0/0/9) 39±6 (18/0/21) 58±7 (40/1/17) 39±6 (30/1/8)
III 11±3 (1/1/9) 29±5 (14/19/16) 75±9 (45/0/30) 61±8 (60/1/0) 99+1/−11 (95/4/0)
IV 45±6 (40/2/3) 50±7 (38/2/10) 50±7 (31/1/18) 55±7 (34/3/18) 8±2 (2/4/2)
II + III + IV 0 3±1 24±4 38±5 7±9
Strong proton sample in SC24 (2009−2016): 71 events
II 0 4±2 (0/1/3) 38±9 (10/4/24) 72±13 (41/7/24) 82±15 (73/8/1)
III 7±4 (1/4/3) 38±9 (17/10/11) 74±13 (55/8/10) 83±15 (68/4/11) 99+1/−17 (96/3/0)
IV 43±9 (41/1/1) 58±11 (51/6/1) 69±13 (58/8/3) 67±13 (52/4/11) 13±5 (8/1/4)
II + III + IV 0 3±2 31±8 55±11 13±4
Weak proton sample in SC24 (2009−2016): 57 events
II 0 0 23±7 (7/4/12) 43±10 (28/4/11) 61±13 (42/14/5)
III 4±3 (2/2/0) 18±6 (9/7/2) 54±12 (35/7/12) 72±15 (53/5/14) 98+2/−18 (86/12/0)
IV 22±7 (18/4/0) 44±11 (28/16/0) 52±12 (29/14/9) 46±11 (26/2/18) 19±6 (0/5/14)
II + III + IV 0 0 14±5 30±8 14±5

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