Past measurement result　by Seawater Radiation Monitor near Fukushima Daiichi Nuclear Power Station

○Information

○Measurement value list ： 2026/09/26(CSV Download)

Radioactivity Concentration Unit:Bq/L

※ When being smaller then detection limit value, the numerical value is indicated with ND

TimeCs137Cs134Totalβ
00:00NDND16
00:10NDND19
00:20NDND19
00:30NDND21
00:40NDND20
00:50NDND18
01:00NDND17
01:10NDND14
01:20NDND14
01:30NDND13
01:40NDND13
01:50NDND14
02:00NDND16
02:10NDND18
02:20NDND19
02:30NDND20
02:40NDND21
02:50NDND21
03:00NDND20
03:10NDND18
03:20NDND20
03:30NDND17
03:40NDND16
03:50NDND17
04:00NDND20
04:10NDND21
04:20NDND18
04:30NDND19
04:40NDND20
04:50NDND18
05:00NDND14
05:10NDND15
05:20NDND14
05:30NDND16
05:40NDND17
05:50NDND17
06:00NDND19
06:10NDND16
06:20NDND18
06:30NDND17
06:40NDND14
06:50NDND14
07:00NDND13
07:10NDND14
07:20NDND15
07:30NDND16
07:40NDND18
07:50NDND15
08:00NDND16
08:10NDND14
08:20NDND14
08:30NDND13
08:40NDND14
08:50NDND17
09:00NDND18
09:10NDND14
09:20NDND13
09:30NDND14
09:40NDND12
09:50NDND12
10:00NDND12
10:10NDND15
10:20NDND16
10:30NDND15
10:40NDND14
10:50NDND16
11:00NDND16
11:10NDND18
11:20NDND19
11:30NDND20
11:40NDND21
11:50NDND20
12:00NDND21
12:10NDND18
12:20NDND16
12:30NDND17
12:40NDND17
12:50NDND17
13:00NDND14
13:10NDND11
13:20NDND13
13:30NDND12
13:40NDND13
13:50NDND14
14:00NDND16
14:10NDND20
14:20NDND18
14:30NDND19
14:40NDND17
14:50NDND15
15:00NDND14
15:10NDND15
15:20NDND16
15:30NDND16
15:40NDND16
15:50NDND20
16:00NDND20
16:10NDND18
16:20NDND19
16:30NDND18
16:40NDND19
16:50NDND14
17:00NDND13
17:10NDND14
17:20NDND15
17:30NDND16
17:40NDND16
17:50NDND18
18:00NDND21
18:10NDND20
18:20NDND19
18:30NDND18
18:40NDND19
18:50NDND18
19:00NDND16
19:10NDND15
19:20NDND16
19:30NDND16
19:40NDND16
19:50NDND16
20:00NDND16
20:10NDND16
20:20NDND15
20:30NDND14
20:40NDND15
20:50NDND14
21:00NDND13
21:10NDND14
21:20NDND15
21:30NDND18
21:40NDND16
21:50NDND18
22:00NDND19
22:10NDND20
22:20NDND20
22:30NDND19
22:40NDND19
22:50NDND18
23:00NDND18
23:10NDND18
23:20NDND16
23:30NDND17
23:40NDND16
23:50NDND16