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

○Information

○Measurement value list : 2026/08/22(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND14
00:10NDND16
00:20NDND17
00:30NDND18
00:40NDND18
00:50NDND20
01:00NDND20
01:10NDND20
01:20NDND18
01:30NDND16
01:40NDND17
01:50NDND13
02:00NDND13
02:10NDND14
02:20NDND16
02:30NDND18
02:40NDND17
02:50NDND18
03:00NDND18
03:10NDND16
03:20NDND14
03:30NDND11
03:40NDND9.6
03:50NDND10
04:00NDND9.9
04:10NDND11
04:20NDND12
04:30NDND13
04:40NDND14
04:50NDND14
05:00NDND15
05:10NDND14
05:20NDND14
05:30NDND15
05:40NDND16
05:50NDND17
06:00NDND16
06:10NDND17
06:20NDND15
06:30NDND13
06:40NDND12
06:50NDND11
07:00NDND11
07:10NDND10
07:20NDND10
07:30NDND12
07:40NDND9.6
07:50NDND9.5
08:00NDND9.3
08:10NDNDND
08:20NDND11
08:30NDND12
08:40NDND12
08:50NDND14
09:00NDND16
09:10NDND18
09:20NDND18
09:30NDND18
09:40NDND18
09:50NDND17
10:00NDND15
10:10NDND14
10:20NDND12
10:30NDND14
10:40NDND14
10:50NDND14
11:00NDND17
11:10NDND19
11:20NDND20
11:30NDND18
11:40NDND18
11:50NDND17
12:00NDND18
12:10NDND16
12:20NDND16
12:30NDND15
12:40NDND15
12:50NDND14
13:00NDND13
13:10NDND13
13:20NDND14
13:30NDND14
13:40NDND14
13:50NDND13
14:00NDND14
14:10NDND12
14:20NDND13
14:30NDND13
14:40NDND15
14:50NDND18
15:00NDND14
15:10NDND17
15:20NDND15
15:30NDND16
15:40NDND14
15:50NDND13
16:00NDND16
16:10NDND15
16:20NDND15
16:30NDND13
16:40NDND13
16:50NDND14
17:00NDND13
17:10NDND11
17:20NDND10
17:30NDND12
17:40NDND13
17:50NDND9.2
18:00NDND12
18:10NDND13
18:20NDND13
18:30NDND13
18:40NDND11
18:50NDND16
19:00NDND13
19:10NDND14
19:20NDND12
19:30NDND12
19:40NDND14
19:50NDND12
20:00NDND13
20:10NDND13
20:20NDND13
20:30NDND15
20:40NDND14
20:50NDND15
21:00NDND16
21:10NDND14
21:20NDND14
21:30NDND14
21:40NDND15
21:50NDND13
22:00NDND15
22:10NDND17
22:20NDND18
22:30NDND16
22:40NDND15
22:50NDND14
23:00NDND10
23:10NDND9.7
23:20NDND9.2
23:30NDND12
23:40NDND11
23:50NDND10