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

○Information

○Measurement value list ： 2026/02/20(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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