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

○Information

○Measurement value list ： 2026/09/22(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND17
00:10NDND17
00:20NDND13
00:30NDND13
00:40NDND12
00:50NDND12
01:00NDND15
01:10NDND16
01:20NDND17
01:30NDND16
01:40NDND18
01:50NDND19
02:00NDND18
02:10NDND17
02:20NDND19
02:30NDND18
02:40NDND17
02:50NDND20
03:00NDND21
03:10NDND19
03:20NDND17
03:30NDND16
03:40NDND17
03:50NDND16
04:00NDND14
04:10NDND16
04:20NDND18
04:30NDND18
04:40NDND19
04:50NDND19
05:00NDND20
05:10NDND18
05:20NDND17
05:30NDND18
05:40NDND18
05:50NDND17
06:00NDND17
06:10NDND20
06:20NDND18
06:30NDND20
06:40NDND17
06:50NDND15
07:00NDND17
07:10NDND13
07:20NDND13
07:30NDND12
07:40NDND14
07:50NDND15
08:00NDND14
08:10NDND15
08:20NDND17
08:30NDND18
08:40NDND17
08:50NDND16
09:00NDND14
09:10NDND16
09:20NDND16
09:30NDND13
09:40NDND13
09:50NDND14
10:00NDND17
10:10NDND15
10:20NDND13
10:30NDND15
10:40NDND16
10:50NDND15
11:00NDND14
11:10NDND15
11:20NDND16
11:30NDND15
11:40NDND16
11:50NDND17
12:00NDND18
12:10NDND15
12:20NDND13
12:30NDND16
12:40NDND15
12:50NDND17
13:00NDND17
13:10NDND20
13:20NDND21
13:30NDND19
13:40NDND18
13:50NDND16
14:00NDND17
14:10NDND15
14:20NDND17
14:30NDND16
14:40NDND17
14:50NDND18
15:00NDND17
15:10NDND16
15:20NDND15
15:30NDND16
15:40NDND17
15:50NDND16
16:00NDND16
16:10NDND15
16:20NDND17
16:30NDND16
16:40NDND16
16:50NDND15
17:00NDND17
17:10NDND20
17:20NDND17
17:30NDND16
17:40NDND15
17:50NDND16
18:00NDND15
18:10NDND13
18:20NDND14
18:30NDND14
18:40NDND12
18:50NDND10
19:00NDNDND
19:10NDND11
19:20NDND8.8
19:30NDND10
19:40NDND12
19:50NDND14
20:00NDND16
20:10NDND14
20:20NDND15
20:30NDND14
20:40NDND17
20:50NDND16
21:00NDND17
21:10NDND18
21:20NDND18
21:30NDND18
21:40NDND14
21:50NDND15
22:00NDND15
22:10NDND14
22:20NDND13
22:30NDND14
22:40NDND14
22:50NDND15
23:00NDND16
23:10NDND17
23:20NDND17
23:30NDND15
23:40NDND15
23:50NDND12