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

○Information

○Measurement value list ： 2026/04/18(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND16
00:10NDND19
00:20NDND17
00:30NDND18
00:40NDND18
00:50NDND20
01:00NDND19
01:10NDND16
01:20NDND17
01:30NDND15
01:40NDND15
01:50NDND16
02:00NDND14
02:10NDND16
02:20NDND17
02:30NDND19
02:40NDND18
02:50NDND18
03:00NDND20
03:10NDND18
03:20NDND18
03:30NDND18
03:40NDND19
03:50NDND18
04:00NDND18
04:10NDND18
04:20NDND20
04:30NDND18
04:40NDND17
04:50NDND17
05:00NDND17
05:10NDND17
05:20NDND15
05:30NDND15
05:40NDND16
05:50NDND17
06:00NDND19
06:10NDND19
06:20NDND18
06:30NDND18
06:40NDND20
06:50NDND18
07:00NDND16
07:10NDND17
07:20NDND20
07:30NDND21
07:40NDND19
07:50NDND20
08:00NDND22
08:10NDND22
08:20NDND25
08:30NDND24
08:40NDND23
08:50NDND22
09:00NDND21
09:10NDND22
09:20NDND18
09:30NDND17
09:40NDND18
09:50NDND20
10:00NDND20
10:10NDND18
10:20NDND20
10:30NDND21
10:40NDND20
10:50NDND22
11:00NDND20
11:10NDND21
11:20NDND20
11:30NDND17
11:40NDND17
11:50NDND15
12:00NDND16
12:10NDND17
12:20NDND16
12:30NDND19
12:40NDND19
12:50NDND18
13:00NDND20
13:10NDND17
13:20NDND16
13:30NDND17
13:40NDND17
13:50NDND19
14:00NDND22
14:10NDND22
14:20NDND21
14:30NDND19
14:40NDND18
14:50NDND18
15:00NDND14
15:10NDND17
15:20NDND19
15:30NDND21
15:40NDND23
15:50NDND24
16:00NDND23
16:10NDND18
16:20NDND17
16:30NDND15
16:40NDND14
16:50NDND10
17:00NDND14
17:10NDND17
17:20NDND18
17:30NDND18
17:40NDND17
17:50NDND19
18:00NDND18
18:10NDND20
18:20NDND19
18:30NDND20
18:40NDND23
18:50NDND26
19:00NDND26
19:10NDND25
19:20NDND24
19:30NDND22
19:40NDND17
19:50NDND14
20:00NDND14
20:10NDND14
20:20NDND14
20:30NDND16
20:40NDND18
20:50NDND17
21:00NDND17
21:10NDND17
21:20NDND17
21:30NDND16
21:40NDND16
21:50NDND16
22:00NDND16
22:10NDND17
22:20NDND18
22:30NDND19
22:40NDND20
22:50NDND21
23:00NDND18
23:10NDND17
23:20NDND17
23:30NDND16
23:40NDND15
23:50NDND14