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

○Information

○Measurement value list ： 2026/03/11(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND23
00:10NDND21
00:20NDND20
00:30NDND20
00:40NDND21
00:50NDND21
01:00NDND20
01:10NDND19
01:20NDND19
01:30NDND17
01:40NDND14
01:50NDND15
02:00NDND15
02:10NDND15
02:20NDND15
02:30NDND18
02:40NDND20
02:50NDND21
03:00NDND20
03:10NDND20
03:20NDND22
03:30NDND18
03:40NDND16
03:50NDND16
04:00NDND18
04:10NDND18
04:20NDND17
04:30NDND21
04:40NDND21
04:50NDND20
05:00NDND18
05:10NDND19
05:20NDND19
05:30NDND18
05:40NDND18
05:50NDND18
06:00NDND15
06:10NDND14
06:20NDND15
06:30NDND15
06:40NDND15
06:50NDND16
07:00NDND18
07:10NDND20
07:20NDND18
07:30NDND17
07:40NDND16
07:50NDND16
08:00NDND16
08:10NDND17
08:20NDND18
08:30NDND20
08:40NDND19
08:50NDND22
09:00NDND22
09:10NDND22
09:20NDND22
09:30NDND22
09:40NDND25
09:50NDND21
10:00NDND19
10:10NDND18
10:20NDND17
10:30NDND17
10:40NDND15
10:50NDND14
11:00NDND15
11:10NDND14
11:20NDND13
11:30NDND14
11:40NDND14
11:50NDND18
12:00NDND20
12:10NDND21
12:20NDND23
12:30NDND24
12:40NDND23
12:50NDND20
13:00NDND18
13:10NDND17
13:20NDND20
13:30NDND20
13:40NDND23
13:50NDND25
14:00NDND26
14:10NDND27
14:20NDND23
14:30NDND20
14:40NDND17
14:50NDND17
15:00NDND18
15:10NDND17
15:20NDND17
15:30NDND18
15:40NDND17
15:50NDND16
16:00NDND14
16:10NDND14
16:20NDND12
16:30NDND12
16:40NDND13
16:50NDND13
17:00NDND13
17:10NDND13
17:20NDND14
17:30NDND17
17:40NDND18
17:50NDND17
18:00NDND16
18:10NDND18
18:20NDND19
18:30NDND21
18:40NDND21
18:50NDND23
19:00NDND26
19:10NDND25
19:20NDND24
19:30NDND18
19:40NDND18
19:50NDND17
20:00NDND14
20:10NDND16
20:20NDND18
20:30NDND18
20:40NDND19
20:50NDND18
21:00NDND21
21:10NDND21
21:20NDND19
21:30NDND18
21:40NDND16
21:50NDND16
22:00NDND14
22:10NDND12
22:20NDND12
22:30NDND12
22:40NDND13
22:50NDND16
23:00NDND18
23:10NDND18
23:20NDND21
23:30NDND22
23:40NDND23
23:50NDND23