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

○Information

○Measurement value list ： 2025/11/21(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND15
00:10NDND15
00:20NDND15
00:30NDND17
00:40NDND17
00:50NDND17
01:00NDND18
01:10NDND21
01:20NDND21
01:30NDND20
01:40NDND18
01:50NDND17
02:00NDND16
02:10NDND14
02:20NDND15
02:30NDND16
02:40NDND19
02:50NDND20
03:00NDND19
03:10NDND19
03:20NDND17
03:30NDND16
03:40NDND14
03:50NDND15
04:00NDND15
04:10NDND16
04:20NDND16
04:30NDND17
04:40NDND18
04:50NDND18
05:00NDND17
05:10NDND17
05:20NDND18
05:30NDND18
05:40NDND17
05:50NDND18
06:00NDND20
06:10NDND20
06:20NDND18
06:30NDND17
06:40NDND17
06:50NDND18
07:00NDND18
07:10NDND16
07:20NDND17
07:30NDND19
07:40NDND20
07:50NDND16
08:00NDND16
08:10NDND17
08:20NDND16
08:30NDND13
08:40NDND13
08:50NDND17
09:00NDND17
09:10NDND18
09:20NDND16
09:30NDND19
09:40NDND18
09:50NDND20
10:00NDND19
10:10NDND17
10:20NDND21
10:30NDND19
10:40NDND20
10:50NDND18
11:00NDND21
11:10NDND22
11:20NDND21
11:30NDND23
11:40NDND22
11:50NDND22
12:00NDND21
12:10NDND21
12:20NDND20
12:30NDND18
12:40NDND18
12:50NDND18
13:00NDND18
13:10NDND19
13:20NDND18
13:30NDND18
13:40NDND19
13:50NDND20
14:00NDND18
14:10NDND18
14:20NDND18
14:30NDND19
14:40NDND19
14:50NDND20
15:00NDND19
15:10NDND17
15:20NDND17
15:30NDND16
15:40NDND16
15:50NDND15
16:00NDND16
16:10NDND18
16:20NDND17
16:30NDND19
16:40NDND19
16:50NDND19
17:00NDND20
17:10NDND20
17:20NDND21
17:30NDND20
17:40NDND18
17:50NDND20
18:00NDND17
18:10NDND17
18:20NDND18
18:30NDND18
18:40NDND18
18:50NDND16
19:00NDND18
19:10NDND18
19:20NDND17
19:30NDND14
19:40NDND16
19:50NDND16
20:00NDND16
20:10NDND14
20:20NDND18
20:30NDND20
20:40NDND18
20:50NDND16
21:00NDND15
21:10NDND14
21:20NDND12
21:30NDND11
21:40NDND11
21:50NDND14
22:00NDND16
22:10NDND17
22:20NDND18
22:30NDND19
22:40NDND22
22:50NDND20
23:00NDND20
23:10NDND20
23:20NDND18
23:30NDND18
23:40NDND14
23:50NDND14