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

○Information

○Measurement value list ： 2026/03/14(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND18
00:10NDND19
00:20NDND20
00:30NDND21
00:40NDND21
00:50NDND20
01:00NDND18
01:10NDND20
01:20NDND20
01:30NDND22
01:40NDND20
01:50NDND21
02:00NDND23
02:10NDND22
02:20NDND20
02:30NDND19
02:40NDND21
02:50NDND19
03:00NDND19
03:10NDND17
03:20NDND19
03:30NDND19
03:40NDND20
03:50NDND19
04:00NDND19
04:10NDND21
04:20NDND20
04:30NDND18
04:40NDND17
04:50NDND21
05:00NDND22
05:10NDND21
05:20NDND21
05:30NDND22
05:40NDND23
05:50NDND21
06:00NDND20
06:10NDND17
06:20NDND18
06:30NDND16
06:40NDND17
06:50NDND17
07:00NDND17
07:10NDND18
07:20NDND17
07:30NDND18
07:40NDND16
07:50NDND14
08:00NDND13
08:10NDND14
08:20NDND17
08:30NDND20
08:40NDND19
08:50NDND22
09:00NDND25
09:10NDND25
09:20NDND22
09:30NDND21
09:40NDND21
09:50NDND18
10:00NDND18
10:10NDND17
10:20NDND18
10:30NDND17
10:40NDND17
10:50NDND19
11:00NDND18
11:10NDND20
11:20NDND19
11:30NDND18
11:40NDND18
11:50NDND19
12:00NDND19
12:10NDND18
12:20NDND19
12:30NDND19
12:40NDND19
12:50NDND19
13:00NDND19
13:10NDND19
13:20NDND17
13:30NDND19
13:40NDND20
13:50NDND20
14:00NDND20
14:10NDND21
14:20NDND22
14:30NDND20
14:40NDND19
14:50NDND16
15:00NDND15
15:10NDND14
15:20NDND13
15:30NDND17
15:40NDND17
15:50NDND19
16:00NDND16
16:10NDND17
16:20NDND17
16:30NDND15
16:40NDND15
16:50NDND15
17:00NDND19
17:10NDND18
17:20NDND18
17:30NDND16
17:40NDND16
17:50NDND18
18:00NDND17
18:10NDND16
18:20NDND17
18:30NDND21
18:40NDND22
18:50NDND19
19:00NDND19
19:10NDND19
19:20NDND20
19:30NDND18
19:40NDND16
19:50NDND18
20:00NDND18
20:10NDND19
20:20NDND18
20:30NDND17
20:40NDND18
20:50NDND19
21:00NDND20
21:10NDND20
21:20NDND18
21:30NDND19
21:40NDND17
21:50NDND15
22:00NDND11
22:10NDND10
22:20NDND9.7
22:30NDND12
22:40NDND14
22:50NDND14
23:00NDND17
23:10NDND20
23:20NDND20
23:30NDND18
23:40NDND17
23:50NDND14