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

○Information

○Measurement value list ： 2026/10/26(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
00:20NDND17
00:30NDND15
00:40NDND17
00:50NDND16
01:00NDND18
01:10NDND18
01:20NDND18
01:30NDND20
01:40NDND17
01:50NDND18
02:00NDND15
02:10NDND13
02:20NDND14
02:30NDND15
02:40NDND15
02:50NDND17
03:00NDND14
03:10NDND16
03:20NDND14
03:30NDND13
03:40NDND17
03:50NDND13
04:00NDND16
04:10NDND14
04:20NDND15
04:30NDND14
04:40NDND12
04:50NDND14
05:00NDND15
05:10NDND16
05:20NDND14
05:30NDND17
05:40NDND18
05:50NDND17
06:00NDND17
06:10NDND17
06:20NDND18
06:30NDND16
06:40NDND16
06:50NDND15
07:00NDND16
07:10NDND17
07:20NDND16
07:30NDND15
07:40NDND13
07:50NDND15
08:00NDND9.6
08:10NDNDND
08:20NDND8.4
08:30NDND11
08:40NDND13
08:50NDND12
09:00NDND16
09:10NDND16
09:20NDND17
09:30NDND14
09:40NDND14
09:50NDND15
10:00NDND16
10:10NDND14
10:20NDND16
10:30NDND17
10:40NDND18
10:50NDND17
11:00NDND17
11:10NDND19
11:20NDND17
11:30NDND19
11:40NDND18
11:50NDND18
12:00NDND17
12:10NDND17
12:20NDND17
12:30NDND17
12:40NDND16
12:50NDND16
13:00NDND17
13:10NDND17
13:20NDND18
13:30NDND17
13:40NDND20
13:50NDND18
14:00NDND18
14:10NDND18
14:20NDND18
14:30NDND18
14:40NDND16
14:50NDND18
15:00NDND20
15:10NDND21
15:20NDND20
15:30NDND21
15:40NDND18
15:50NDND19
16:00NDND16
16:10NDND13
16:20NDND12
16:30NDND12
16:40NDND13
16:50NDND14
17:00NDND14
17:10NDND16
17:20NDND18
17:30NDND19
17:40NDND19
17:50NDND16
18:00NDND15
18:10NDND16
18:20NDND16
18:30NDND16
18:40NDND18
18:50NDND20
19:00NDND21
19:10NDND21
19:20NDND21
19:30NDND18
19:40NDND20
19:50NDND19
20:00NDND17
20:10NDND15
20:20NDND14
20:30NDND15
20:40NDND12
20:50NDND14
21:00NDND15
21:10NDND17
21:20NDND19
21:30NDND18
21:40NDND17
21:50NDND14
22:00NDND14
22:10NDND12
22:20NDND12
22:30NDND15
22:40NDND14
22:50NDND14
23:00NDND15
23:10NDND18
23:20NDND19
23:30NDND15
23:40NDND17
23:50NDND18