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

○Information

○Measurement value list ： 2026/03/21(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND19
00:10NDND17
00:20NDND18
00:30NDND20
00:40NDND22
00:50NDND24
01:00NDND22
01:10NDND22
01:20NDND22
01:30NDND21
01:40NDND20
01:50NDND18
02:00NDND19
02:10NDND20
02:20NDND19
02:30NDND19
02:40NDND19
02:50NDND21
03:00NDND20
03:10NDND21
03:20NDND24
03:30NDND23
03:40NDND21
03:50NDND20
04:00NDND19
04:10NDND18
04:20NDND17
04:30NDND17
04:40NDND21
04:50NDND19
05:00NDND18
05:10NDND17
05:20NDND16
05:30NDND17
05:40NDND15
05:50NDND15
06:00NDND18
06:10NDND18
06:20NDND20
06:30NDND19
06:40NDND20
06:50NDND22
07:00NDND21
07:10NDND21
07:20NDND22
07:30NDND21
07:40NDND20
07:50NDND20
08:00NDND18
08:10NDND20
08:20NDND18
08:30NDND17
08:40NDND18
08:50NDND17
09:00NDND18
09:10NDND16
09:20NDND17
09:30NDND18
09:40NDND16
09:50NDND17
10:00NDND15
10:10NDND15
10:20NDND16
10:30NDND17
10:40NDND18
10:50NDND18
11:00NDND21
11:10NDND24
11:20NDND21
11:30NDND21
11:40NDND20
11:50NDND17
12:00NDND15
12:10NDND15
12:20NDND16
12:30NDND14
12:40NDND15
12:50NDND15
13:00NDND15
13:10NDND13
13:20NDND13
13:30NDND13
13:40NDND13
13:50NDND14
14:00NDND15
14:10NDND19
14:20NDND20
14:30NDND21
14:40NDND22
14:50NDND20
15:00NDND20
15:10NDND15
15:20NDND14
15:30NDND12
15:40NDND12
15:50NDND14
16:00NDND14
16:10NDND17
16:20NDND19
16:30NDND21
16:40NDND20
16:50NDND20
17:00NDND20
17:10NDND21
17:20NDND21
17:30NDND18
17:40NDND19
17:50NDND20
18:00NDND16
18:10NDND16
18:20NDND13
18:30NDND14
18:40NDND13
18:50NDND14
19:00NDND16
19:10NDND16
19:20NDND17
19:30NDND18
19:40NDND19
19:50NDND20
20:00NDND21
20:10NDND20
20:20NDND19
20:30NDND19
20:40NDND19
20:50NDND17
21:00NDND16
21:10NDND16
21:20NDND19
21:30NDND19
21:40NDND17
21:50NDND16
22:00NDND16
22:10NDND14
22:20NDND13
22:30NDND12
22:40NDND14
22:50NDND13
23:00NDND14
23:10NDND14
23:20NDND15
23:30NDND15
23:40NDND16
23:50NDND21