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

○Information

○Measurement value list ： 2026/02/21(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND24
00:10NDND26
00:20NDND25
00:30NDND26
00:40NDND23
00:50NDND22
01:00NDND19
01:10NDND17
01:20NDND15
01:30NDND14
01:40NDND13
01:50NDND12
02:00NDND11
02:10NDND13
02:20NDND14
02:30NDND14
02:40NDND16
02:50NDND18
03:00NDND18
03:10NDND17
03:20NDND17
03:30NDND16
03:40NDND14
03:50NDND14
04:00NDND15
04:10NDND15
04:20NDND16
04:30NDND18
04:40NDND18
04:50NDND19
05:00NDND18
05:10NDND19
05:20NDND22
05:30NDND22
05:40NDND21
05:50NDND20
06:00NDND21
06:10NDND24
06:20NDND20
06:30NDND19
06:40NDND21
06:50NDND21
07:00NDND18
07:10NDND16
07:20NDND17
07:30NDND16
07:40NDND14
07:50NDND14
08:00NDND15
08:10NDND15
08:20NDND14
08:30NDND17
08:40NDND20
08:50NDND21
09:00NDND22
09:10NDND21
09:20NDND22
09:30NDND23
09:40NDND22
09:50NDND22
10:00NDND22
10:10NDND22
10:20NDND21
10:30NDND20
10:40NDND21
10:50NDND20
11:00NDND18
11:10NDND21
11:20NDND21
11:30NDND21
11:40NDND20
11:50NDND22
12:00NDND24
12:10NDND23
12:20NDND26
12:30NDND26
12:40NDND26
12:50NDND26
13:00NDND26
13:10NDND27
13:20NDND23
13:30NDND21
13:40NDND20
13:50NDND19
14:00NDND18
14:10NDND16
14:20NDND16
14:30NDND17
14:40NDND17
14:50NDND18
15:00NDND20
15:10NDND20
15:20NDND20
15:30NDND20
15:40NDND21
15:50NDND21
16:00NDND22
16:10NDND19
16:20NDND21
16:30NDND22
16:40NDND22
16:50NDND20
17:00NDND16
17:10NDND18
17:20NDND18
17:30NDND20
17:40NDND19
17:50NDND17
18:00NDND18
18:10NDND17
18:20NDND16
18:30NDND16
18:40NDND16
18:50NDND21
19:00NDND20
19:10NDND21
19:20NDND20
19:30NDND18
19:40NDND17
19:50NDND16
20:00NDND14
20:10NDND13
20:20NDND15
20:30NDND16
20:40NDND15
20:50NDND15
21:00NDND18
21:10NDND18
21:20NDND15
21:30NDND14
21:40NDND16
21:50NDND17
22:00NDND16
22:10NDND16
22:20NDND18
22:30NDND18
22:40NDND17
22:50NDND16
23:00NDND15
23:10NDND14
23:20NDND14
23:30NDND14
23:40NDND15
23:50NDND14