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

○Information

○Measurement value list ： 2025/11/18(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND9.6
00:10NDND12
00:20NDND14
00:30NDND14
00:40NDND14
00:50NDND18
01:00NDND20
01:10NDND17
01:20NDND17
01:30NDND15
01:40NDND17
01:50NDND17
02:00NDND14
02:10NDND16
02:20NDND14
02:30NDND14
02:40NDND14
02:50NDND11
03:00NDND10
03:10NDND10
03:20NDND12
03:30NDND11
03:40NDND12
03:50NDND12
04:00NDND12
04:10NDND15
04:20NDND12
04:30NDND16
04:40NDND16
04:50NDND17
05:00NDND15
05:10NDND14
05:20NDND17
05:30NDND16
05:40NDND16
05:50NDND17
06:00NDND21
06:10NDND19
06:20NDND19
06:30NDND20
06:40NDND19
06:50NDND18
07:00NDND19
07:10NDND18
07:20NDND17
07:30NDND16
07:40NDND14
07:50NDND14
08:00NDND11
08:10NDND14
08:20NDND13
08:30NDND14
08:40NDND15
08:50NDND15
09:00NDND16
09:10NDND16
09:20NDND15
09:30NDND17
09:40NDND17
09:50NDND18
10:00NDND17
10:10NDND14
10:20NDND16
10:30NDND13
10:40NDND16
10:50NDND17
11:00NDND20
11:10NDND23
11:20NDND20
11:30NDND21
11:40NDND20
11:50NDND18
12:00NDND14
12:10NDND11
12:20NDND13
12:30NDND13
12:40NDND14
12:50NDND14
13:00NDND18
13:10NDND19
13:20NDND20
13:30NDND23
13:40NDND24
13:50NDND23
14:00NDND21
14:10NDND22
14:20NDND21
14:30NDND19
14:40NDND16
14:50NDND21
15:00NDND21
15:10NDND22
15:20NDND22
15:30NDND21
15:40NDND22
15:50NDND21
16:00NDND21
16:10NDND20
16:20NDND21
16:30NDND22
16:40NDND22
16:50NDND20
17:00NDND16
17:10NDND17
17:20NDND17
17:30NDND18
17:40NDND18
17:50NDND16
18:00NDND18
18:10NDND16
18:20NDND16
18:30NDND16
18:40NDND18
18:50NDND18
19:00NDND20
19:10NDND21
19:20NDND21
19:30NDND20
19:40NDND17
19:50NDND17
20:00NDND16
20:10NDND14
20:20NDND12
20:30NDND12
20:40NDND14
20:50NDND16
21:00NDND16
21:10NDND19
21:20NDND22
21:30NDND20
21:40NDND17
21:50NDND14
22:00NDND14
22:10NDND12
22:20NDND13
22:30NDND11
22:40NDND14
22:50NDND17
23:00NDND18
23:10NDND17
23:20NDND13
23:30NDND17
23:40NDND17
23:50NDND18