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

○Information

○Measurement value list ： 2026/08/25(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND16
00:10NDND15
00:20NDND14
00:30NDND13
00:40NDND16
00:50NDND15
01:00NDND14
01:10NDND14
01:20NDND13
01:30NDND10
01:40NDNDND
01:50NDNDND
02:00NDNDND
02:10NDND9.6
02:20NDND13
02:30NDND16
02:40NDND17
02:50NDND16
03:00NDND17
03:10NDND18
03:20NDND14
03:30NDND12
03:40NDND13
03:50NDND14
04:00NDND12
04:10NDND11
04:20NDND11
04:30NDND12
04:40NDND12
04:50NDND13
05:00NDND13
05:10NDND13
05:20NDND14
05:30NDND14
05:40NDND14
05:50NDND12
06:00NDND12
06:10NDND14
06:20NDND12
06:30NDND14
06:40NDND14
06:50NDND15
07:00NDND16
07:10NDND15
07:20NDND17
07:30NDND16
07:40NDND12
07:50NDND13
08:00NDND13
08:10NDND13
08:20NDND14
08:30NDND16
08:40NDND19
08:50NDND16
09:00NDND16
09:10NDND15
09:20NDND14
09:30NDND11
09:40NDND10
09:50NDND13
10:00NDND11
10:10NDND14
10:20NDND15
10:30NDND16
10:40NDND17
10:50NDND15
11:00NDND17
11:10NDND17
11:20NDND14
11:30NDND17
11:40NDND16
11:50NDND18
12:00NDND16
12:10NDND16
12:20NDND17
12:30NDND16
12:40NDND16
12:50NDND14
13:00NDND15
13:10NDND15
13:20NDND16
13:30NDND15
13:40NDND16
13:50NDND16
14:00NDND13
14:10NDND14
14:20NDND14
14:30NDND15
14:40NDND13
14:50NDND13
15:00NDND15
15:10NDND16
15:20NDND15
15:30NDND14
15:40NDND15
15:50NDND15
16:00NDND14
16:10NDND12
16:20NDND12
16:30NDND12
16:40NDND11
16:50NDND12
17:00NDND12
17:10NDND14
17:20NDND15
17:30NDND14
17:40NDND16
17:50NDND15
18:00NDND16
18:10NDND15
18:20NDND16
18:30NDND17
18:40NDND17
18:50NDND18
19:00NDND18
19:10NDND17
19:20NDND15
19:30NDND17
19:40NDND16
19:50NDND16
20:00NDND15
20:10NDND14
20:20NDND15
20:30NDND14
20:40NDND12
20:50NDND12
21:00NDND13
21:10NDND12
21:20NDND11
21:30NDND11
21:40NDND10
21:50NDND11
22:00NDND8.9
22:10NDND10
22:20NDND9.7
22:30NDND9.3
22:40NDND11
22:50NDND13
23:00NDND15
23:10NDND14
23:20NDND14
23:30NDND14
23:40NDND13
23:50NDND11