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

○Information

○Measurement value list ： 2026/04/26(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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