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

○Information

○Measurement value list ： 2026/10/25(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND14
00:10NDND13
00:20NDND13
00:30NDND11
00:40NDND14
00:50NDND12
01:00NDND12
01:10NDND13
01:20NDND13
01:30NDND14
01:40NDND14
01:50NDND14
02:00NDND15
02:10NDND15
02:20NDND16
02:30NDND12
02:40NDND12
02:50NDND11
03:00NDNDND
03:10NDND8.6
03:20NDND11
03:30NDND14
03:40NDND15
03:50NDND15
04:00NDND18
04:10NDND18
04:20NDND14
04:30NDND14
04:40NDND13
04:50NDND16
05:00NDND17
05:10NDND14
05:20NDND16
05:30NDND15
05:40NDND16
05:50NDND16
06:00NDND16
06:10NDND18
06:20NDND16
06:30NDND17
06:40NDND16
06:50NDND15
07:00NDND14
07:10NDND13
07:20NDND14
07:30NDND13
07:40NDND12
07:50NDND11
08:00NDND11
08:10NDND14
08:20NDND13
08:30NDND14
08:40NDND15
08:50NDND15
09:00NDND16
09:10NDND16
09:20NDND15
09:30NDND15
09:40NDND16
09:50NDND18
10:00NDND16
10:10NDND16
10:20NDND16
10:30NDND17
10:40NDND16
10:50NDND14
11:00NDND14
11:10NDND16
11:20NDND18
11:30NDND16
11:40NDND16
11:50NDND17
12:00NDND17
12:10NDND16
12:20NDND14
12:30NDND14
12:40NDND16
12:50NDND15
13:00NDND14
13:10NDND16
13:20NDND17
13:30NDND17
13:40NDND16
13:50NDND17
14:00NDND18
14:10NDND16
14:20NDND14
14:30NDND14
14:40NDND13
14:50NDND14
15:00NDND14
15:10NDND14
15:20NDND17
15:30NDND20
15:40NDND20
15:50NDND19
16:00NDND18
16:10NDND21
16:20NDND19
16:30NDND16
16:40NDND17
16:50NDND20
17:00NDND18
17:10NDND17
17:20NDND17
17:30NDND18
17:40NDND17
17:50NDND15
18:00NDND16
18:10NDND15
18:20NDND14
18:30NDND13
18:40NDND13
18:50NDND14
19:00NDND16
19:10NDND14
19:20NDND14
19:30NDND15
19:40NDND15
19:50NDND13
20:00NDND14
20:10NDND12
20:20NDND12
20:30NDND14
20:40NDND11
20:50NDND13
21:00NDND10
21:10NDND11
21:20NDND12
21:30NDND11
21:40NDND14
21:50NDND15
22:00NDND16
22:10NDND18
22:20NDND15
22:30NDND19
22:40NDND18
22:50NDND18
23:00NDND15
23:10NDND16
23:20NDND16
23:30NDND14
23:40NDND13
23:50NDND14