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

○Information

○Measurement value list ： 2026/08/29(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
00:20NDND17
00:30NDND16
00:40NDND15
00:50NDND16
01:00NDND17
01:10NDND15
01:20NDND14
01:30NDND12
01:40NDND10
01:50NDND10
02:00NDND9.0
02:10NDND11
02:20NDND12
02:30NDND12
02:40NDND12
02:50NDND12
03:00NDND14
03:10NDND14
03:20NDND16
03:30NDND15
03:40NDND16
03:50NDND17
04:00NDND16
04:10NDND13
04:20NDND12
04:30NDND13
04:40NDND14
04:50NDND11
05:00NDND10
05:10NDND13
05:20NDND14
05:30NDND17
05:40NDND18
05:50NDND21
06:00NDND23
06:10NDND22
06:20NDND20
06:30NDND18
06:40NDND19
06:50NDND18
07:00NDND18
07:10NDND19
07:20NDND20
07:30NDND21
07:40NDND17
07:50NDND17
08:00NDND15
08:10NDND14
08:20NDND13
08:30NDND13
08:40NDND15
08:50NDND14
09:00NDND13
09:10NDND14
09:20NDND17
09:30NDND16
09:40NDND16
09:50NDND13
10:00NDND13
10:10NDND12
10:20NDND10
10:30NDND14
10:40NDND16
10:50NDND18
11:00NDND17
11:10NDND17
11:20NDND16
11:30NDND12
11:40NDND12
11:50NDND13
12:00NDND15
12:10NDND14
12:20NDND16
12:30NDND18
12:40NDND17
12:50NDND14
13:00NDND15
13:10NDND16
13:20NDND14
13:30NDND12
13:40NDND11
13:50NDND13
14:00NDND11
14:10NDND9.3
14:20NDND10
14:30NDND11
14:40NDND10
14:50NDND8.5
15:00NDNDND
15:10NDND10
15:20NDND8.6
15:30NDND10
15:40NDND11
15:50NDND13
16:00NDND16
16:10NDND15
16:20NDND17
16:30NDND17
16:40NDND17
16:50NDND18
17:00NDND18
17:10NDND18
17:20NDND17
17:30NDND15
17:40NDND14
17:50NDND15
18:00NDND14
18:10NDND13
18:20NDND13
18:30NDND13
18:40NDND15
18:50NDND14
19:00NDND14
19:10NDND14
19:20NDND16
19:30NDND16
19:40NDND14
19:50NDND13
20:00NDND15
20:10NDND16
20:20NDND15
20:30NDND15
20:40NDND17
20:50NDND19
21:00NDND18
21:10NDND19
21:20NDND19
21:30NDND21
21:40NDND21
21:50NDND17
22:00NDND17
22:10NDND15
22:20NDND14
22:30NDND12
22:40NDND13
22:50NDND16
23:00NDND15
23:10NDND17
23:20NDND17
23:30NDND19
23:40NDND17
23:50NDND14