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

○Information

○Measurement value list ： 2026/07/15(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND15
00:10NDND13
00:20NDND14
00:30NDND13
00:40NDND14
00:50NDND15
01:00NDND15
01:10NDND18
01:20NDND17
01:30NDND15
01:40NDND17
01:50NDND18
02:00NDND18
02:10NDND19
02:20NDND19
02:30NDND20
02:40NDND19
02:50NDND17
03:00NDND16
03:10NDND14
03:20NDND14
03:30NDND15
03:40NDND16
03:50NDND17
04:00NDND18
04:10NDND17
04:20NDND16
04:30NDND16
04:40NDND18
04:50NDND16
05:00NDND19
05:10NDND20
05:20NDND19
05:30NDND20
05:40NDND18
05:50NDND20
06:00NDND17
06:10NDND17
06:20NDND20
06:30NDND18
06:40NDND17
06:50NDND16
07:00NDND14
07:10NDND13
07:20NDND12
07:30NDND10
07:40NDND10
07:50NDND8.9
08:00NDND12
08:10NDND11
08:20NDND12
08:30NDND11
08:40NDND14
08:50NDND13
09:00NDND12
09:10NDND12
09:20NDND12
09:30NDND16
09:40NDND14
09:50NDND16
10:00NDND19
10:10NDND21
10:20NDND22
10:30NDND21
10:40NDND21
10:50NDND18
11:00NDND16
11:10NDND12
11:20NDND11
11:30NDND10
11:40NDND10
11:50NDND13
12:00NDND12
12:10NDND15
12:20NDND14
12:30NDND16
12:40NDND20
12:50NDND17
13:00NDND18
13:10NDND18
13:20NDND19
13:30NDND18
13:40NDND15
13:50NDND17
14:00NDND18
14:10NDND17
14:20NDND17
14:30NDND17
14:40NDND18
14:50NDND17
15:00NDND17
15:10NDND16
15:20NDND18
15:30NDND19
15:40NDND17
15:50NDND17
16:00NDND14
16:10NDND17
16:20NDND17
16:30NDND14
16:40NDND16
16:50NDND17
17:00NDND17
17:10NDND18
17:20NDND16
17:30NDND18
17:40NDND17
17:50NDND18
18:00NDND19
18:10NDND16
18:20NDND18
18:30NDND16
18:40NDND18
18:50NDND16
19:00NDND16
19:10NDND15
19:20NDND14
19:30NDND16
19:40NDND13
19:50NDND14
20:00NDND14
20:10NDND15
20:20NDND14
20:30NDND13
20:40NDND14
20:50NDND15
21:00NDND15
21:10NDND16
21:20NDND18
21:30NDND18
21:40NDND17
21:50NDND17
22:00NDND16
22:10NDND15
22:20NDND14
22:30NDND15
22:40NDND15
22:50NDND13
23:00NDND14
23:10NDND14
23:20NDND13
23:30NDND12
23:40NDND11
23:50NDND13