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

○Information

○Measurement value list ： 2026/08/26(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND10
00:10NDNDND
00:20NDNDND
00:30NDNDND
00:40NDNDND
00:50NDND8.4
01:00NDND9.5
01:10NDND15
01:20NDND15
01:30NDND16
01:40NDND17
01:50NDND17
02:00NDND12
02:10NDND12
02:20NDND13
02:30NDND11
02:40NDND13
02:50NDND13
03:00NDND16
03:10NDND17
03:20NDND15
03:30NDND17
03:40NDND14
03:50NDND16
04:00NDND14
04:10NDND10
04:20NDND12
04:30NDND14
04:40NDND14
04:50NDND11
05:00NDND15
05:10NDND16
05:20NDND16
05:30NDND12
05:40NDND12
05:50NDND13
06:00NDND12
06:10NDND14
06:20NDND14
06:30NDND13
06:40NDND13
06:50NDND13
07:00NDND12
07:10NDND13
07:20NDND11
07:30NDND15
07:40NDND13
07:50NDND12
08:00NDND11
08:10NDND11
08:20NDND14
08:30NDND13
08:40NDND17
08:50NDND15
09:00NDND16
09:10NDND14
09:20NDND12
09:30NDND14
09:40NDND15
09:50NDND18
10:00NDND17
10:10NDND17
10:20NDND17
10:30NDND16
10:40NDND16
10:50NDND14
11:00NDND13
11:10NDND13
11:20NDND15
11:30NDND14
11:40NDND12
11:50NDND12
12:00NDND12
12:10NDND14
12:20NDND12
12:30NDND12
12:40NDND14
12:50NDND12
13:00NDND14
13:10NDND15
13:20NDND15
13:30NDND15
13:40NDND13
13:50NDND17
14:00NDND13
14:10NDND12
14:20NDND12
14:30NDND12
14:40NDND13
14:50NDND14
15:00NDND15
15:10NDND14
15:20NDND14
15:30NDND14
15:40NDND16
15:50NDND14
16:00NDND15
16:10NDND18
16:20NDND20
16:30NDND20
16:40NDND20
16:50NDND20
17:00NDND20
17:10NDND17
17:20NDND15
17:30NDND16
17:40NDND13
17:50NDND14
18:00NDND13
18:10NDND13
18:20NDND12
18:30NDND12
18:40NDND15
18:50NDND14
19:00NDND16
19:10NDND18
19:20NDND19
19:30NDND19
19:40NDND19
19:50NDND19
20:00NDND18
20:10NDND17
20:20NDND17
20:30NDND17
20:40NDND14
20:50NDND12
21:00NDND12
21:10NDND11
21:20NDND12
21:30NDND14
21:40NDND14
21:50NDND14
22:00NDND13
22:10NDND15
22:20NDND13
22:30NDND14
22:40NDND14
22:50NDND16
23:00NDND16
23:10NDND14
23:20NDND19
23:30NDND16
23:40NDND16
23:50NDND14