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

○Information

○Measurement value list ： 2026/03/13(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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