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

○Information

○Measurement value list ： 2025/11/24(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND19
00:10NDND17
00:20NDND15
00:30NDND12
00:40NDND9.6
00:50NDND9.3
01:00NDNDND
01:10NDNDND
01:20NDND8.8
01:30NDND9.9
01:40NDND10
01:50NDND10
02:00NDND10
02:10NDND11
02:20NDND13
02:30NDND11
02:40NDND10
02:50NDND11
03:00NDND12
03:10NDND13
03:20NDND11
03:30NDND16
03:40NDND16
03:50NDND16
04:00NDND17
04:10NDND14
04:20NDND17
04:30NDND15
04:40NDND15
04:50NDND16
05:00NDND16
05:10NDND16
05:20NDND15
05:30NDND15
05:40NDND14
05:50NDND13
06:00NDND13
06:10NDND16
06:20NDND15
06:30NDND15
06:40NDND16
06:50NDND17
07:00NDND19
07:10NDND18
07:20NDND16
07:30NDND18
07:40NDND18
07:50NDND16
08:00NDND15
08:10NDND15
08:20NDND14
08:30NDND13
08:40NDND12
08:50NDND12
09:00NDND12
09:10NDND11
09:20NDND14
09:30NDND16
09:40NDND17
09:50NDND18
10:00NDND17
10:10NDND18
10:20NDND16
10:30NDND14
10:40NDND14
10:50NDND13
11:00NDND14
11:10NDND15
11:20NDND18
11:30NDND17
11:40NDND16
11:50NDND16
12:00NDND16
12:10NDND16
12:20NDND13
12:30NDND15
12:40NDND17
12:50NDND17
13:00NDND17
13:10NDND17
13:20NDND18
13:30NDND18
13:40NDND18
13:50NDND19
14:00NDND19
14:10NDND20
14:20NDND19
14:30NDND20
14:40NDND18
14:50NDND17
15:00NDND18
15:10NDND17
15:20NDND17
15:30NDND18
15:40NDND18
15:50NDND17
16:00NDND17
16:10NDND18
16:20NDND21
16:30NDND18
16:40NDND18
16:50NDND20
17:00NDND21
17:10NDND21
17:20NDND17
17:30NDND18
17:40NDND19
17:50NDND17
18:00NDND18
18:10NDND14
18:20NDND19
18:30NDND18
18:40NDND16
18:50NDND18
19:00NDND17
19:10NDND16
19:20NDND13
19:30NDND13
19:40NDND12
19:50NDND11
20:00NDND12
20:10NDND15
20:20NDND15
20:30NDND17
20:40NDND17
20:50NDND17
21:00NDND15
21:10NDND16
21:20NDND16
21:30NDND16
21:40NDND17
21:50NDND15
22:00NDND12
22:10NDND11
22:20NDND14
22:30NDND14
22:40NDND17
22:50NDND18
23:00NDND22
23:10NDND23
23:20NDND20
23:30NDND16
23:40NDND13
23:50NDND12