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

○Information

○Measurement value list ： 2026/05/06(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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