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

○Information

○Measurement value list ： 2026/02/12(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND20
00:10NDND21
00:20NDND18
00:30NDND18
00:40NDND21
00:50NDND21
01:00NDND21
01:10NDND21
01:20NDND24
01:30NDND24
01:40NDND22
01:50NDND24
02:00NDND26
02:10NDND26
02:20NDND24
02:30NDND24
02:40NDND26
02:50NDND21
03:00NDND18
03:10NDND18
03:20NDND19
03:30NDND20
03:40NDND19
03:50NDND22
04:00NDND21
04:10NDND21
04:20NDND19
04:30NDND21
04:40NDND22
04:50NDND20
05:00NDND22
05:10NDND22
05:20NDND25
05:30NDND23
05:40NDND22
05:50NDND22
06:00NDND20
06:10NDND19
06:20NDND18
06:30NDND18
06:40NDND18
06:50NDND19
07:00NDND20
07:10NDND23
07:20NDND23
07:30NDND24
07:40NDND24
07:50NDND23
08:00NDND23
08:10NDND22
08:20NDND21
08:30NDND22
08:40NDND23
08:50NDND24
09:00NDND24
09:10NDND24
09:20NDND26
09:30NDND24
09:40NDND24
09:50NDND23
10:00NDND24
10:10NDND23
10:20NDND21
10:30NDND22
10:40NDND20
10:50NDND20
11:00NDND20
11:10NDND20
11:20NDND20
11:30NDND19
11:40NDND20
11:50NDND21
12:00NDND20
12:10NDND20
12:20NDND22
12:30NDND23
12:40NDND23
12:50NDND24
13:00NDND22
13:10NDND24
13:20NDND22
13:30NDND22
13:40NDND22
13:50NDND20
14:00NDND24
14:10NDND23
14:20NDND25
14:30NDND25
14:40NDND26
14:50NDND27
15:00NDND26
15:10NDND27
15:20NDND24
15:30NDND24
15:40NDND22
15:50NDND21
16:00NDND18
16:10NDND16
16:20NDND19
16:30NDND17
16:40NDND21
16:50NDND21
17:00NDND21
17:10NDND24
17:20NDND24
17:30NDND26
17:40NDND23
17:50NDND25
18:00NDND27
18:10NDND28
18:20NDND27
18:30NDND25
18:40NDND26
18:50NDND23
19:00NDND24
19:10NDND20
19:20NDND20
19:30NDND17
19:40NDND17
19:50NDND20
20:00NDND20
20:10NDND22
20:20NDND22
20:30NDND23
20:40NDND23
20:50NDND21
21:00NDND20
21:10NDND17
21:20NDND18
21:30NDND18
21:40NDND16
21:50NDND17
22:00NDND14
22:10NDND18
22:20NDND17
22:30NDND16
22:40NDND20
22:50NDND20
23:00NDND23
23:10NDND23
23:20NDND24
23:30NDND26
23:40NDND25
23:50NDND24