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

○Information

○Measurement value list ： 2026/05/08(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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