NRO Heliograph Tohban's Report for Week 39 (21 Sep 1998 - 27 Sep 1998)

                                                      Tohban : T. Yokoyama

1. Solar Activity

Solar activity was moderate in this week. There were many (sub-)flares 
in AR 8340. Most of them were of GOES C-class. One M7.1 flare on 1998-9-23
which occured in the NRH night.

 NRH event list of week 39

              Start      Peak      End    Dur    Max  / GOES NOAA  Loca-
              (UT)       (UT)      (UT)  (sec)   Cor. /             tion
1998-09-21 23:39:36  23:41:42  23:51:36    720    185 / C1.9            
1998-09-22 22:46:04  22:46:05  22:46:13      9     25 /                 
1998-09-23 00:30:14  00:30:56  00:59:12   1738    129 / C9.3            
1998-09-23 05:08:23  05:15:07  05:20:02    699     27 / C1.2            
1998-09-23 22:46:04  22:46:48  22:55:08    544    401 / C2.2 8340 N21W04
1998-09-24 04:32:52  04:32:57  04:33:18     26     28 / B6.9            
1998-09-24 06:40:16  06:41:39  06:45:00    284     22 /                 
1998-09-25 02:31:47  02:31:53  02:32:45     58     37 /                 
1998-09-25 22:45:22  22:45:40  22:49:16    234     28 /                 
1998-09-25 23:21:03  23:23:16  23:29:53    530     32 /                 
1998-09-26 05:22:50  05:22:52  05:33:37    647     28 /                 
1998-09-26 05:35:08  05:35:25  05:36:19     71     28 /                 
1998-09-26 05:39:28  06:35:49  06:44:57   3929     34 /                 
1998-09-26 22:45:22  22:45:24  23:04:31   1149     25 /                 
1998-09-26 23:08:14  23:08:23  23:09:34     80     23 /                 
1998-09-26 23:15:28  23:16:03  23:29:48    860     35 /                 
1998-09-27 02:38:36  02:41:35  02:46:14    458     26 /                 
1998-09-27 03:57:15  03:58:46  04:03:45    390     38 /                 
1998-09-27 05:16:26  05:16:27  05:16:32      6     24 /                 
1998-09-27 05:57:36  06:43:39  06:44:56   2840     26 /                 


2. Remarkable Events found by NRH

    None


3. Observing log

    None


4. Next tohban (week 40)
      K. Hori