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

○Information

○Measurement value list ： 2026/10/18(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDNDND
00:10NDND9.9
00:20NDND9.7
00:30NDND10
00:40NDND9.3
00:50NDND11
01:00NDND12
01:10NDND13
01:20NDND13
01:30NDND16
01:40NDND16
01:50NDND13
02:00NDND16
02:10NDND14
02:20NDND14
02:30NDND13
02:40NDND15
02:50NDND17
03:00NDND15
03:10NDND16
03:20NDND16
03:30NDND18
03:40NDND17
03:50NDND15
04:00NDND15
04:10NDND18
04:20NDND17
04:30NDND16
04:40NDND14
04:50NDND18
05:00NDND21
05:10NDND19
05:20NDND18
05:30NDND19
05:40NDND19
05:50NDND15
06:00NDND16
06:10NDND15
06:20NDND16
06:30NDND13
06:40NDND12
06:50NDND14
07:00NDND12
07:10NDND12
07:20NDND9.2
07:30NDND13
07:40NDND16
07:50NDND13
08:00NDND14
08:10NDND12
08:20NDND14
08:30NDND13
08:40NDND12
08:50NDND14
09:00NDND12
09:10NDND14
09:20NDND14
09:30NDND14
09:40NDND14
09:50NDND13
10:00NDND14
10:10NDND14
10:20NDND15
10:30NDND14
10:40NDND16
10:50NDND16
11:00NDND19
11:10NDND19
11:20NDND16
11:30NDND17
11:40NDND15
11:50NDND17
12:00NDND14
12:10NDND16
12:20NDND19
12:30NDND18
12:40NDND17
12:50NDND14
13:00NDND14
13:10NDND12
13:20NDND11
13:30NDND12
13:40NDND12
13:50NDND14
14:00NDND14
14:10NDND17
14:20NDND16
14:30NDND16
14:40NDND16
14:50NDND17
15:00NDND18
15:10NDND17
15:20NDND18
15:30NDND18
15:40NDND18
15:50NDND16
16:00NDND18
16:10NDND16
16:20NDND16
16:30NDND15
16:40NDND16
16:50NDND18
17:00NDND14
17:10NDND16
17:20NDND14
17:30NDND15
17:40NDND15
17:50NDND15
18:00NDND18
18:10NDND17
18:20NDND19
18:30NDND18
18:40NDND16
18:50NDND16
19:00NDND13
19:10NDND15
19:20NDND16
19:30NDND16
19:40NDND16
19:50NDND16
20:00NDND17
20:10NDND16
20:20NDND16
20:30NDND15
20:40NDND14
20:50NDND17
21:00NDND17
21:10NDND15
21:20NDND14
21:30NDND16
21:40NDND16
21:50NDND14
22:00NDND15
22:10NDND16
22:20NDND16
22:30NDND16
22:40NDND16
22:50NDND17
23:00NDND13
23:10NDND13
23:20NDND11
23:30NDND10
23:40NDND12
23:50NDND12