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

○Information

○Measurement value list : 2025/10/15(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND15
00:10NDND12
00:20NDND13
00:30NDND9.6
00:40NDND8.4
00:50NDND9.0
01:00NDND8.9
01:10NDND9.6
01:20NDND9.6
01:30NDND8.6
01:40NDND11
01:50NDND11
02:00NDND9.2
02:10NDND11
02:20NDND11
02:30NDND11
02:40NDNDND
02:50NDNDND
03:00NDND9.0
03:10NDND8.6
03:20NDND9.5
03:30NDND12
03:40NDND16
03:50NDND14
04:00NDND13
04:10NDND13
04:20NDND11
04:30NDND11
04:40NDND9.0
04:50NDND8.6
05:00NDNDND
05:10NDND9.6
05:20NDND10
05:30NDNDND
05:40NDNDND
05:50NDND9.2
06:00NDND11
06:10NDND11
06:20NDND9.3
06:30NDND11
06:40NDND9.9
06:50NDND9.5
07:00NDND8.4
07:10NDNDND
07:20NDND11
07:30NDND14
07:40NDND16
07:50NDND17
08:00NDND17
08:10NDND15
08:20NDND16
08:30NDND14
08:40NDND13
08:50NDND14
09:00NDND14
09:10NDND15
09:20NDND12
09:30NDND14
09:40NDND12
09:50NDND13
10:00NDND11
10:10NDND10
10:20NDND12
10:30NDNDND
10:40NDND13
10:50NDND12
11:00NDND14
11:10NDND14
11:20NDND14
11:30NDND18
11:40NDND14
11:50NDND16
12:00NDND18
12:10NDND20
12:20NDND20
12:30NDND18
12:40NDND17
12:50NDND15
13:00NDND12
13:10NDND14
13:20NDND14
13:30NDND16
13:40NDND17
13:50NDND19
14:00NDND20
14:10NDND18
14:20NDND18
14:30NDND17
14:40NDND18
14:50NDND14
15:00NDND14
15:10NDND13
15:20NDND12
15:30NDND13
15:40NDND11
15:50NDND12
16:00NDND10
16:10NDND14
16:20NDND16
16:30NDND14
16:40NDND15
16:50NDND18
17:00NDND22
17:10NDND20
17:20NDND18
17:30NDND16
17:40NDND18
17:50NDND16
18:00NDND12
18:10NDND12
18:20NDND15
18:30NDND18
18:40NDND17
18:50NDND17
19:00NDND16
19:10NDND16
19:20NDND12
19:30NDND10
19:40NDND11
19:50NDND11
20:00NDND12
20:10NDND14
20:20NDND17
20:30NDND15
20:40NDND15
20:50NDND15
21:00NDND14
21:10NDND10
21:20NDND9.5
21:30NDND11
21:40NDND9.3
21:50NDND9.3
22:00NDND10
22:10NDND10
22:20NDND9.7
22:30NDND9.0
22:40NDND9.7
22:50NDNDND
23:00NDND9.3
23:10NDND12
23:20NDND14
23:30NDND16
23:40NDND16
23:50NDND19