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

○Information

○Measurement value list ： 2025/09/21(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND20
00:10NDND20
00:20NDND19
00:30NDND20
00:40NDND20
00:50NDND20
01:00NDND17
01:10NDND19
01:20NDND24
01:30NDND24
01:40NDND22
01:50NDND20
02:00NDND19
02:10NDND17
02:20NDND13
02:30NDND12
02:40NDND13
02:50NDND13
03:00NDND14
03:10NDND18
03:20NDND17
03:30NDND16
03:40NDND17
03:50NDND18
04:00NDND17
04:10NDND15
04:20NDND18
04:30NDND17
04:40NDND15
04:50NDND14
05:00NDND14
05:10NDND14
05:20NDND13
05:30NDND13
05:40NDND14
05:50NDND15
06:00NDND15
06:10NDND17
06:20NDND15
06:30NDND15
06:40NDND15
06:50NDND14
07:00NDND14
07:10NDND12
07:20NDND16
07:30NDND16
07:40NDND16
07:50NDND16
08:00NDND19
08:10NDND19
08:20NDND18
08:30NDND18
08:40NDND20
08:50NDND18
09:00NDND15
09:10NDND15
09:20NDND14
09:30NDND14
09:40NDND14
09:50NDND16
10:00NDND17
10:10NDND14
10:20NDND14
10:30NDND16
10:40NDND16
10:50NDND17
11:00NDND18
11:10NDND19
11:20NDND20
11:30NDND18
11:40NDND19
11:50NDND17
12:00NDND14
12:10NDND17
12:20NDND15
12:30NDND16
12:40NDND14
12:50NDND14
13:00NDND13
13:10NDND9.2
13:20NDND12
13:30NDND12
13:40NDND11
13:50NDND12
14:00NDND13
14:10NDND15
14:20NDND13
14:30NDND13
14:40NDND13
14:50NDND14
15:00NDND17
15:10NDND16
15:20NDND16
15:30NDND14
15:40NDND15
15:50NDND13
16:00NDND10
16:10NDND12
16:20NDND13
16:30NDND15
16:40NDND16
16:50NDND16
17:00NDND19
17:10NDND18
17:20NDND18
17:30NDND18
17:40NDND17
17:50NDND14
18:00NDND12
18:10NDND14
18:20NDND15
18:30NDND13
18:40NDND11
18:50NDND18
19:00NDND17
19:10NDND14
19:20NDND14
19:30NDND15
19:40NDND17
19:50NDND15
20:00NDND15
20:10NDND16
20:20NDND14
20:30NDND13
20:40NDND14
20:50NDND14
21:00NDND14
21:10NDND15
21:20NDND15
21:30NDND17
21:40NDND14
21:50NDND11
22:00NDND14
22:10NDND13
22:20NDND14
22:30NDND13
22:40NDND14
22:50NDND17
23:00NDND16
23:10NDND17
23:20NDND15
23:30NDND16
23:40NDND17
23:50NDND18