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

○Information

○Measurement value list ： 2025/10/25(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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