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

○Information

○Measurement value list : 2026/08/23(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND12
00:10NDND12
00:20NDND14
00:30NDND13
00:40NDND15
00:50NDND17
01:00NDND17
01:10NDND16
01:20NDND16
01:30NDND13
01:40NDND10
01:50NDND10
02:00NDND10
02:10NDND11
02:20NDND12
02:30NDND14
02:40NDND15
02:50NDND16
03:00NDND14
03:10NDND14
03:20NDND13
03:30NDND13
03:40NDND15
03:50NDND13
04:00NDND15
04:10NDND14
04:20NDND15
04:30NDND14
04:40NDND14
04:50NDND13
05:00NDND13
05:10NDND18
05:20NDND15
05:30NDND16
05:40NDND16
05:50NDND15
06:00NDND12
06:10NDND11
06:20NDND13
06:30NDND12
06:40NDND11
06:50NDND8.4
07:00NDND10
07:10NDND10
07:20NDND11
07:30NDND10
07:40NDND9.6
07:50NDND13
08:00NDND14
08:10NDND13
08:20NDND12
08:30NDND13
08:40NDND14
08:50NDND12
09:00NDNDND
09:10NDND9.0
09:20NDNDND
09:30NDNDND
09:40NDNDND
09:50NDND11
10:00NDND14
10:10NDND15
10:20NDND16
10:30NDND17
10:40NDND18
10:50NDND15
11:00NDND14
11:10NDND13
11:20NDND15
11:30NDND14
11:40NDND13
11:50NDND16
12:00NDND15
12:10NDND15
12:20NDND12
12:30NDND12
12:40NDND13
12:50NDND12
13:00NDND12
13:10NDND9.9
13:20NDND9.3
13:30NDND9.7
13:40NDND8.8
13:50NDND11
14:00NDND12
14:10NDND16
14:20NDND17
14:30NDND16
14:40NDND17
14:50NDND16
15:00NDND14
15:10NDND14
15:20NDND12
15:30NDND14
15:40NDND13
15:50NDND12
16:00NDND12
16:10NDND12
16:20NDND13
16:30NDND12
16:40NDND13
16:50NDND12
17:00NDND14
17:10NDND14
17:20NDND14
17:30NDND15
17:40NDND15
17:50NDND17
18:00NDND15
18:10NDND12
18:20NDND13
18:30NDND12
18:40NDND13
18:50NDND12
19:00NDND13
19:10NDND13
19:20NDND14
19:30NDND16
19:40NDND15
19:50NDND16
20:00NDND16
20:10NDND18
20:20NDND14
20:30NDND12
20:40NDND8.6
20:50NDND8.5
21:00NDND8.6
21:10NDNDND
21:20NDND8.5
21:30NDND8.4
21:40NDNDND
21:50NDNDND
22:00NDNDND
22:10NDNDND
22:20NDND8.4
22:30NDND10
22:40NDND11
22:50NDND14
23:00NDND14
23:10NDND11
23:20NDND15
23:30NDND13
23:40NDND13
23:50NDND16