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

○Information

○Measurement value list ： 2026/02/15(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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