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

○Information

○Measurement value list : 2025/11/23(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND15
00:10NDND16
00:20NDND15
00:30NDND14
00:40NDND12
00:50NDND15
01:00NDND15
01:10NDND16
01:20NDND17
01:30NDND18
01:40NDND18
01:50NDND16
02:00NDND16
02:10NDND18
02:20NDND15
02:30NDND14
02:40NDND15
02:50NDND14
03:00NDND14
03:10NDND12
03:20NDND12
03:30NDND14
03:40NDND13
03:50NDND16
04:00NDND16
04:10NDND16
04:20NDND17
04:30NDND18
04:40NDND19
04:50NDND16
05:00NDND17
05:10NDND16
05:20NDND14
05:30NDND12
05:40NDND13
05:50NDND15
06:00NDND17
06:10NDND16
06:20NDND20
06:30NDND18
06:40NDND15
06:50NDND16
07:00NDND15
07:10NDND17
07:20NDND16
07:30NDND17
07:40NDND19
07:50NDND18
08:00NDND20
08:10NDND20
08:20NDND19
08:30NDND15
08:40NDND14
08:50NDND14
09:00NDND12
09:10NDND10
09:20NDND11
09:30NDND15
09:40NDND15
09:50NDND13
10:00NDND12
10:10NDND16
10:20NDND15
10:30NDND14
10:40NDND12
10:50NDND14
11:00NDND16
11:10NDND16
11:20NDND16
11:30NDND18
11:40NDND20
11:50NDND18
12:00NDND15
12:10NDND13
12:20NDND12
12:30NDND9.6
12:40NDNDND
12:50NDND9.6
13:00NDND10
13:10NDND12
13:20NDND14
13:30NDND15
13:40NDND15
13:50NDND13
14:00NDND13
14:10NDND13
14:20NDND12
14:30NDND12
14:40NDND12
14:50NDND12
15:00NDND9.9
15:10NDND8.4
15:20NDND9.0
15:30NDNDND
15:40NDND8.6
15:50NDND10
16:00NDND12
16:10NDND12
16:20NDND13
16:30NDND13
16:40NDND13
16:50NDND11
17:00NDND9.2
17:10NDND12
17:20NDND12
17:30NDND14
17:40NDND15
17:50NDND16
18:00NDND16
18:10NDND13
18:20NDND15
18:30NDND15
18:40NDND15
18:50NDND16
19:00NDND20
19:10NDND21
19:20NDND16
19:30NDND16
19:40NDND17
19:50NDND18
20:00NDND16
20:10NDND16
20:20NDND19
20:30NDND19
20:40NDND17
20:50NDND16
21:00NDND16
21:10NDND17
21:20NDND16
21:30NDND18
21:40NDND18
21:50NDND17
22:00NDND19
22:10NDND18
22:20NDND17
22:30NDND18
22:40NDND17
22:50NDND16
23:00NDND13
23:10NDND14
23:20NDND16
23:30NDND13
23:40NDND17
23:50NDND19