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

○Information

○Measurement value list : 2025/10/22(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND13
00:10NDND13
00:20NDND14
00:30NDND13
00:40NDND14
00:50NDND12
01:00NDND13
01:10NDND13
01:20NDND12
01:30NDND13
01:40NDND12
01:50NDND14
02:00NDND11
02:10NDND9.3
02:20NDND10
02:30NDND9.6
02:40NDND9.2
02:50NDND10
03:00NDND13
03:10NDND13
03:20NDND14
03:30NDND16
03:40NDND17
03:50NDND17
04:00NDND17
04:10NDND18
04:20NDND18
04:30NDND17
04:40NDND13
04:50NDND9.7
05:00NDNDND
05:10NDNDND
05:20NDNDND
05:30NDND8.6
05:40NDND12
05:50NDND13
06:00NDND17
06:10NDND17
06:20NDND14
06:30NDND14
06:40NDND13
06:50NDND14
07:00NDND11
07:10NDND8.9
07:20NDND8.4
07:30NDND11
07:40NDND10
07:50NDND10
08:00NDND11
08:10NDND12
08:20NDND11
08:30NDND8.4
08:40NDND9.3
08:50NDND9.6
09:00NDND10
09:10NDND12
09:20NDND14
09:30NDND15
09:40NDND14
09:50NDND12
10:00NDND12
10:10NDND10
10:20NDND8.9
10:30NDND8.5
10:40NDND12
10:50NDND12
11:00NDND13
11:10NDND12
11:20NDND13
11:30NDND15
11:40NDND14
11:50NDND17
12:00NDND15
12:10NDND18
12:20NDND16
12:30NDND16
12:40NDND15
12:50NDND14
13:00NDND14
13:10NDND12
13:20NDND13
13:30NDND11
13:40NDND12
13:50NDND9.7
14:00NDND9.6
14:10NDND10
14:20NDND11
14:30NDND13
14:40NDND13
14:50NDND10
15:00NDND14
15:10NDND12
15:20NDND9.6
15:30NDNDND
15:40NDNDND
15:50NDNDND
16:00NDNDND
16:10NDNDND
16:20NDNDND
16:30NDNDND
16:40NDNDND
16:50NDND9.2
17:00NDNDND
17:10NDNDND
17:20NDND12
17:30NDND10
17:40NDND9.7
17:50NDND10
18:00NDND11
18:10NDND13
18:20NDND12
18:30NDND14
18:40NDND13
18:50NDND15
19:00NDND13
19:10NDND13
19:20NDND12
19:30NDND12
19:40NDND12
19:50NDND9.9
20:00NDND8.5
20:10NDND9.2
20:20NDND9.7
20:30NDNDND
20:40NDNDND
20:50NDNDND
21:00NDND8.8
21:10NDND8.5
21:20NDNDND
21:30NDNDND
21:40NDND8.4
21:50NDND10
22:00NDND12
22:10NDND13
22:20NDND13
22:30NDND15
22:40NDND16
22:50NDND14
23:00NDND12
23:10NDND11
23:20NDND11
23:30NDND11
23:40NDNDND
23:50NDND9.6