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

○Information

○Measurement value list ： 2025/11/22(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND13
00:10NDND14
00:20NDND16
00:30NDND17
00:40NDND17
00:50NDND14
01:00NDND14
01:10NDND13
01:20NDND13
01:30NDND13
01:40NDND13
01:50NDND15
02:00NDND15
02:10NDND14
02:20NDND12
02:30NDND12
02:40NDND17
02:50NDND19
03:00NDND20
03:10NDND22
03:20NDND22
03:30NDND21
03:40NDND17
03:50NDND16
04:00NDND17
04:10NDND16
04:20NDND16
04:30NDND15
04:40NDND16
04:50NDND16
05:00NDND14
05:10NDND14
05:20NDND15
05:30NDND18
05:40NDND17
05:50NDND15
06:00NDND14
06:10NDND14
06:20NDND12
06:30NDND12
06:40NDND13
06:50NDND14
07:00NDND18
07:10NDND21
07:20NDND24
07:30NDND22
07:40NDND20
07:50NDND19
08:00NDND14
08:10NDND13
08:20NDND11
08:30NDND11
08:40NDND14
08:50NDND16
09:00NDND19
09:10NDND17
09:20NDND18
09:30NDND17
09:40NDND17
09:50NDND17
10:00NDND17
10:10NDND17
10:20NDND17
10:30NDND19
10:40NDND20
10:50NDND17
11:00NDND17
11:10NDND18
11:20NDND18
11:30NDND16
11:40NDND13
11:50NDND15
12:00NDND14
12:10NDND13
12:20NDND12
12:30NDND12
12:40NDND12
12:50NDND12
13:00NDND10
13:10NDND10
13:20NDND8.9
13:30NDND11
13:40NDND12
13:50NDND12
14:00NDND13
14:10NDND13
14:20NDND14
14:30NDND12
14:40NDND14
14:50NDND14
15:00NDND14
15:10NDND15
15:20NDND17
15:30NDND18
15:40NDND18
15:50NDND14
16:00NDND15
16:10NDND17
16:20NDND17
16:30NDND18
16:40NDND15
16:50NDND17
17:00NDND19
17:10NDND17
17:20NDND18
17:30NDND14
17:40NDND14
17:50NDND13
18:00NDND12
18:10NDND16
18:20NDND15
18:30NDND16
18:40NDND17
18:50NDND18
19:00NDND17
19:10NDND16
19:20NDND13
19:30NDND13
19:40NDND13
19:50NDND12
20:00NDND12
20:10NDND11
20:20NDND9.5
20:30NDND9.7
20:40NDND13
20:50NDND12
21:00NDND14
21:10NDND11
21:20NDND14
21:30NDND14
21:40NDND14
21:50NDND16
22:00NDND13
22:10NDND14
22:20NDND13
22:30NDND15
22:40NDND9.6
22:50NDNDND
23:00NDND10
23:10NDND11
23:20NDND12
23:30NDND12
23:40NDND16
23:50NDND17