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

○Information

○Measurement value list ： 2026/10/19(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND13
00:10NDND10
00:20NDND11
00:30NDND10
00:40NDND11
00:50NDND10
01:00NDND11
01:10NDND15
01:20NDND16
01:30NDND18
01:40NDND17
01:50NDND15
02:00NDND17
02:10NDND16
02:20NDND17
02:30NDND17
02:40NDND17
02:50NDND19
03:00NDND21
03:10NDND20
03:20NDND18
03:30NDND15
03:40NDND14
03:50NDND14
04:00NDND11
04:10NDND12
04:20NDND13
04:30NDND17
04:40NDND16
04:50NDND16
05:00NDND16
05:10NDND16
05:20NDND16
05:30NDND14
05:40NDND14
05:50NDND15
06:00NDND14
06:10NDND16
06:20NDND16
06:30NDND15
06:40NDND15
06:50NDND18
07:00NDND20
07:10NDND17
07:20NDND17
07:30NDND22
07:40NDND20
07:50NDND17
08:00NDND15
08:10NDND18
08:20NDND19
08:30NDND18
08:40NDND21
08:50NDND21
09:00NDND21
09:10NDND19
09:20NDND20
09:30NDND19
09:40NDND18
09:50NDND18
10:00NDND19
10:10NDND18
10:20NDND16
10:30NDND13
10:40NDND14
10:50NDND14
11:00NDND14
11:10NDND15
11:20NDND16
11:30NDND19
11:40NDND19
11:50NDND17
12:00NDND17
12:10NDND16
12:20NDND15
12:30NDND16
12:40NDND15
12:50NDND15
13:00NDND15
13:10NDND17
13:20NDND20
13:30NDND19
13:40NDND19
13:50NDND18
14:00NDND18
14:10NDND16
14:20NDND13
14:30NDND12
14:40NDND14
14:50NDND16
15:00NDND14
15:10NDND14
15:20NDND15
15:30NDND16
15:40NDND16
15:50NDND17
16:00NDND18
16:10NDND20
16:20NDND22
16:30NDND21
16:40NDND19
16:50NDND18
17:00NDND16
17:10NDND16
17:20NDND13
17:30NDND14
17:40NDND15
17:50NDND12
18:00NDND13
18:10NDND12
18:20NDND13
18:30NDND13
18:40NDND13
18:50NDND17
19:00NDND18
19:10NDND18
19:20NDND19
19:30NDND19
19:40NDND18
19:50NDND20
20:00NDND19
20:10NDND19
20:20NDND17
20:30NDND18
20:40NDND19
20:50NDND18
21:00NDND20
21:10NDND21
21:20NDND22
21:30NDND23
21:40NDND23
21:50NDND22
22:00NDND21
22:10NDND19
22:20NDND18
22:30NDND16
22:40NDND16
22:50NDND19
23:00NDND21
23:10NDND22
23:20NDND24
23:30NDND25
23:40NDND26
23:50NDND25