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

○Information

○Measurement value list ： 2025/10/12(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND16
00:10NDND18
00:20NDND20
00:30NDND20
00:40NDND17
00:50NDND19
01:00NDND18
01:10NDND14
01:20NDND13
01:30NDND14
01:40NDND16
01:50NDND16
02:00NDND16
02:10NDND17
02:20NDND15
02:30NDND14
02:40NDND14
02:50NDND15
03:00NDND14
03:10NDND16
03:20NDND15
03:30NDND16
03:40NDND16
03:50NDND14
04:00NDND16
04:10NDND14
04:20NDND17
04:30NDND16
04:40NDND17
04:50NDND19
05:00NDND18
05:10NDND17
05:20NDND17
05:30NDND20
05:40NDND18
05:50NDND17
06:00NDND16
06:10NDND18
06:20NDND18
06:30NDND14
06:40NDND16
06:50NDND15
07:00NDND18
07:10NDND16
07:20NDND16
07:30NDND14
07:40NDND14
07:50NDND14
08:00NDND10
08:10NDND11
08:20NDND10
08:30NDND11
08:40NDND12
08:50NDND12
09:00NDND14
09:10NDND14
09:20NDND15
09:30NDND15
09:40NDND14
09:50NDND16
10:00NDND15
10:10NDND14
10:20NDND14
10:30NDND15
10:40NDND15
10:50NDND14
11:00NDND13
11:10NDND15
11:20NDND16
11:30NDND16
11:40NDND17
11:50NDND18
12:00NDND19
12:10NDND18
12:20NDND16
12:30NDND18
12:40NDND18
12:50NDND18
13:00NDND16
13:10NDND16
13:20NDND17
13:30NDND14
13:40NDND12
13:50NDND8.5
14:00NDND10
14:10NDND10
14:20NDND13
14:30NDND15
14:40NDND16
14:50NDND20
15:00NDND18
15:10NDND19
15:20NDND17
15:30NDND18
15:40NDND18
15:50NDND17
16:00NDND18
16:10NDND19
16:20NDND18
16:30NDND18
16:40NDND13
16:50NDND12
17:00NDND12
17:10NDND8.5
17:20NDND9.6
17:30NDNDND
17:40NDND10
17:50NDND12
18:00NDND12
18:10NDND15
18:20NDND18
18:30NDND18
18:40NDND18
18:50NDND17
19:00NDND14
19:10NDND12
19:20NDND9.7
19:30NDND11
19:40NDND11
19:50NDND10
20:00NDND12
20:10NDND14
20:20NDND14
20:30NDND12
20:40NDND14
20:50NDND16
21:00NDND15
21:10NDND14
21:20NDND16
21:30NDND18
21:40NDND17
21:50NDND15
22:00NDND16
22:10NDND15
22:20NDND11
22:30NDND13
22:40NDND10
22:50NDND12
23:00NDND15
23:10NDND16
23:20NDND18
23:30NDND17
23:40NDND16
23:50NDND16