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

○Information

○Measurement value list ： 2026/09/27(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND16
00:10NDND16
00:20NDND16
00:30NDND15
00:40NDND14
00:50NDND14
01:00NDND13
01:10NDND12
01:20NDND14
01:30NDND14
01:40NDND17
01:50NDND18
02:00NDND19
02:10NDND18
02:20NDND17
02:30NDND19
02:40NDND19
02:50NDND18
03:00NDND18
03:10NDND18
03:20NDND18
03:30NDND18
03:40NDND15
03:50NDND18
04:00NDND18
04:10NDND17
04:20NDND17
04:30NDND17
04:40NDND19
04:50NDND17
05:00NDND17
05:10NDND18
05:20NDND19
05:30NDND19
05:40NDND19
05:50NDND19
06:00NDND20
06:10NDND18
06:20NDND17
06:30NDND16
06:40NDND15
06:50NDND15
07:00NDND13
07:10NDND16
07:20NDND15
07:30NDND16
07:40NDND18
07:50NDND17
08:00NDND21
08:10NDND21
08:20NDND21
08:30NDND22
08:40NDND21
08:50NDND22
09:00NDND20
09:10NDND20
09:20NDND18
09:30NDND16
09:40NDND14
09:50NDND12
10:00NDND12
10:10NDND12
10:20NDND15
10:30NDND15
10:40NDND16
10:50NDND16
11:00NDND17
11:10NDND16
11:20NDND17
11:30NDND18
11:40NDND19
11:50NDND18
12:00NDND16
12:10NDND19
12:20NDND18
12:30NDND19
12:40NDND19
12:50NDND22
13:00NDND22
13:10NDND20
13:20NDND19
13:30NDND18
13:40NDND18
13:50NDND16
14:00NDND18
14:10NDND20
14:20NDND21
14:30NDND22
14:40NDND22
14:50NDND22
15:00NDND21
15:10NDND20
15:20NDND16
15:30NDND12
15:40NDND14
15:50NDND15
16:00NDND14
16:10NDND14
16:20NDND17
16:30NDND17
16:40NDND14
16:50NDND15
17:00NDND16
17:10NDND18
17:20NDND20
17:30NDND20
17:40NDND20
17:50NDND20
18:00NDND17
18:10NDND14
18:20NDND12
18:30NDND8.5
18:40NDNDND
18:50NDNDND
19:00NDNDND
19:10NDND9.0
19:20NDND12
19:30NDND16
19:40NDND15
19:50NDND13
20:00NDND16
20:10NDND15
20:20NDND13
20:30NDND13
20:40NDND14
20:50NDND18
21:00NDND19
21:10NDND21
21:20NDND23
21:30NDND24
21:40NDND25
21:50NDND24
22:00NDND22
22:10NDND21
22:20NDND17
22:30NDND17
22:40NDND16
22:50NDND14
23:00NDND17
23:10NDND13
23:20NDND14
23:30NDND11
23:40NDND13
23:50NDND14