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

○Information

○Measurement value list : 2025/10/24(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND14
00:10NDND14
00:20NDND15
00:30NDND14
00:40NDND13
00:50NDND12
01:00NDND13
01:10NDND12
01:20NDND9.5
01:30NDNDND
01:40NDND8.8
01:50NDNDND
02:00NDNDND
02:10NDNDND
02:20NDND9.2
02:30NDND12
02:40NDND12
02:50NDND13
03:00NDND10
03:10NDND8.9
03:20NDND9.0
03:30NDNDND
03:40NDNDND
03:50NDNDND
04:00NDNDND
04:10NDNDND
04:20NDNDND
04:30NDNDND
04:40NDNDND
04:50NDNDND
05:00NDNDND
05:10NDND9.3
05:20NDND9.0
05:30NDND10
05:40NDND11
05:50NDND13
06:00NDND13
06:10NDND11
06:20NDND12
06:30NDND11
06:40NDND13
06:50NDND14
07:00NDND16
07:10NDND16
07:20NDND16
07:30NDND15
07:40NDND15
07:50NDND14
08:00NDND12
08:10NDND12
08:20NDND12
08:30NDND13
08:40NDND10
08:50NDND11
09:00NDND12
09:10NDND10
09:20NDND8.6
09:30NDND9.0
09:40NDND11
09:50NDNDND
10:00NDNDND
10:10NDND12
10:20NDND13
10:30NDND14
10:40NDND16
10:50NDND18
11:00NDND17
11:10NDND15
11:20NDND15
11:30NDND15
11:40NDND16
11:50NDND16
12:00NDND18
12:10NDND17
12:20NDND20
12:30NDND17
12:40NDND14
12:50NDND14
13:00NDND13
13:10NDND13
13:20NDND11
13:30NDND13
13:40NDND14
13:50NDND16
14:00NDND16
14:10NDND14
14:20NDND14
14:30NDND14
14:40NDND16
14:50NDND13
15:00NDND14
15:10NDND16
15:20NDND16
15:30NDND16
15:40NDND14
15:50NDND14
16:00NDND13
16:10NDND12
16:20NDND10
16:30NDND9.6
16:40NDND10
16:50NDNDND
17:00NDND8.5
17:10NDND11
17:20NDND14
17:30NDND14
17:40NDND15
17:50NDND18
18:00NDND16
18:10NDND17
18:20NDND16
18:30NDND16
18:40NDND14
18:50NDND14
19:00NDND17
19:10NDND17
19:20NDND15
19:30NDND16
19:40NDND16
19:50NDND16
20:00NDND13
20:10NDND11
20:20NDND12
20:30NDND13
20:40NDND13
20:50NDND12
21:00NDND13
21:10NDND14
21:20NDND12
21:30NDND12
21:40NDND12
21:50NDND14
22:00NDND13
22:10NDND11
22:20NDND12
22:30NDND10
22:40NDND11
22:50NDND8.5
23:00NDNDND
23:10NDND11
23:20NDND12
23:30NDND12
23:40NDND11
23:50NDND12