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

○Information

○Measurement value list ： 2026/01/09(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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