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

○Information

○Measurement value list ： 2026/03/22(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
00:20NDND20
00:30NDND20
00:40NDND18
00:50NDND16
01:00NDND16
01:10NDND14
01:20NDND14
01:30NDND13
01:40NDND14
01:50NDND16
02:00NDND18
02:10NDND19
02:20NDND21
02:30NDND24
02:40NDND23
02:50NDND23
03:00NDND21
03:10NDND22
03:20NDND20
03:30NDND18
03:40NDND18
03:50NDND18
04:00NDND20
04:10NDND18
04:20NDND16
04:30NDND16
04:40NDND16
04:50NDND15
05:00NDND15
05:10NDND17
05:20NDND18
05:30NDND21
05:40NDND20
05:50NDND19
06:00NDND17
06:10NDND18
06:20NDND18
06:30NDND16
06:40NDND17
06:50NDND18
07:00NDND21
07:10NDND21
07:20NDND21
07:30NDND21
07:40NDND18
07:50NDND18
08:00NDND16
08:10NDND13
08:20NDND11
08:30NDND11
08:40NDND14
08:50NDND14
09:00NDND13
09:10NDND14
09:20NDND16
09:30NDND16
09:40NDND15
09:50NDND16
10:00NDND17
10:10NDND19
10:20NDND19
10:30NDND21
10:40NDND21
10:50NDND18
11:00NDND17
11:10NDND18
11:20NDND16
11:30NDND15
11:40NDND17
11:50NDND18
12:00NDND20
12:10NDND20
12:20NDND21
12:30NDND19
12:40NDND18
12:50NDND18
13:00NDND18
13:10NDND17
13:20NDND18
13:30NDND19
13:40NDND17
13:50NDND17
14:00NDND17
14:10NDND16
14:20NDND18
14:30NDND18
14:40NDND20
14:50NDND19
15:00NDND19
15:10NDND20
15:20NDND19
15:30NDND20
15:40NDND18
15:50NDND19
16:00NDND18
16:10NDND15
16:20NDND15
16:30NDND16
16:40NDND18
16:50NDND18
17:00NDND16
17:10NDND18
17:20NDND16
17:30NDND15
17:40NDND15
17:50NDND14
18:00NDND15
18:10NDND17
18:20NDND16
18:30NDND12
18:40NDND11
18:50NDND12
19:00NDND15
19:10NDND15
19:20NDND15
19:30NDND18
19:40NDND19
19:50NDND18
20:00NDND15
20:10NDND13
20:20NDND16
20:30NDND18
20:40NDND16
20:50NDND18
21:00NDND20
21:10NDND21
21:20NDND20
21:30NDND19
21:40NDND19
21:50NDND20
22:00NDND20
22:10NDND18
22:20NDND18
22:30NDND17
22:40NDND17
22:50NDND16
23:00NDND16
23:10NDND17
23:20NDND15
23:30NDND13
23:40NDND14
23:50NDND14