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

○Information

○Measurement value list ： 2025/11/20(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND14
00:10NDND16
00:20NDND12
00:30NDND11
00:40NDND8.5
00:50NDND9.2
01:00NDND11
01:10NDND9.6
01:20NDND11
01:30NDND14
01:40NDND15
01:50NDND17
02:00NDND17
02:10NDND18
02:20NDND16
02:30NDND14
02:40NDND14
02:50NDND13
03:00NDND14
03:10NDND11
03:20NDND13
03:30NDND14
03:40NDND13
03:50NDND12
04:00NDND12
04:10NDND14
04:20NDND16
04:30NDND17
04:40NDND17
04:50NDND19
05:00NDND20
05:10NDND20
05:20NDND17
05:30NDND15
05:40NDND16
05:50NDND17
06:00NDND15
06:10NDND14
06:20NDND13
06:30NDND12
06:40NDND11
06:50NDND8.9
07:00NDNDND
07:10NDND9.3
07:20NDND12
07:30NDND14
07:40NDND16
07:50NDND16
08:00NDND20
08:10NDND18
08:20NDND16
08:30NDND14
08:40NDND16
08:50NDND17
09:00NDND16
09:10NDND18
09:20NDND19
09:30NDND20
09:40NDND20
09:50NDND20
10:00NDND18
10:10NDND16
10:20NDND17
10:30NDND17
10:40NDND14
10:50NDND13
11:00NDND13
11:10NDND16
11:20NDND16
11:30NDND16
11:40NDND20
11:50NDND21
12:00NDND24
12:10NDND23
12:20NDND24
12:30NDND26
12:40NDND24
12:50NDND23
13:00NDND22
13:10NDND22
13:20NDND19
13:30NDND17
13:40NDND16
13:50NDND18
14:00NDND17
14:10NDND15
14:20NDND18
14:30NDND19
14:40NDND19
14:50NDND18
15:00NDND19
15:10NDND19
15:20NDND18
15:30NDND16
15:40NDND16
15:50NDND13
16:00NDND12
16:10NDND13
16:20NDND13
16:30NDND11
16:40NDND13
16:50NDND16
17:00NDND16
17:10NDND15
17:20NDND14
17:30NDND17
17:40NDND17
17:50NDND16
18:00NDND15
18:10NDND16
18:20NDND19
18:30NDND18
18:40NDND17
18:50NDND19
19:00NDND21
19:10NDND23
19:20NDND23
19:30NDND22
19:40NDND20
19:50NDND21
20:00NDND19
20:10NDND16
20:20NDND17
20:30NDND18
20:40NDND22
20:50NDND20
21:00NDND20
21:10NDND21
21:20NDND20
21:30NDND20
21:40NDND20
21:50NDND21
22:00NDND22
22:10NDND23
22:20NDND21
22:30NDND18
22:40NDND17
22:50NDND16
23:00NDND17
23:10NDND15
23:20NDND16
23:30NDND16
23:40NDND16
23:50NDND16