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

○Information

○Measurement value list ： 2026/04/08(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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