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

○Information

○Measurement value list ： 2026/02/17(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND20
00:10NDND17
00:20NDND16
00:30NDND15
00:40NDND17
00:50NDND18
01:00NDND20
01:10NDND21
01:20NDND21
01:30NDND23
01:40NDND23
01:50NDND20
02:00NDND21
02:10NDND22
02:20NDND25
02:30NDND21
02:40NDND18
02:50NDND18
03:00NDND17
03:10NDND17
03:20NDND13
03:30NDND17
03:40NDND17
03:50NDND18
04:00NDND18
04:10NDND17
04:20NDND19
04:30NDND17
04:40NDND20
04:50NDND20
05:00NDND20
05:10NDND21
05:20NDND22
05:30NDND22
05:40NDND22
05:50NDND22
06:00NDND23
06:10NDND23
06:20NDND22
06:30NDND21
06:40NDND21
06:50NDND20
07:00NDND18
07:10NDND16
07:20NDND18
07:30NDND18
07:40NDND16
07:50NDND16
08:00NDND17
08:10NDND18
08:20NDND18
08:30NDND20
08:40NDND19
08:50NDND20
09:00NDND21
09:10NDND20
09:20NDND18
09:30NDND18
09:40NDND19
09:50NDND19
10:00NDND19
10:10NDND18
10:20NDND18
10:30NDND18
10:40NDND19
10:50NDND17
11:00NDND17
11:10NDND19
11:20NDND22
11:30NDND22
11:40NDND21
11:50NDND23
12:00NDND24
12:10NDND24
12:20NDND22
12:30NDND22
12:40NDND22
12:50NDND21
13:00NDND19
13:10NDND18
13:20NDND19
13:30NDND18
13:40NDND20
13:50NDND21
14:00NDND21
14:10NDND21
14:20NDND21
14:30NDND21
14:40NDND19
14:50NDND19
15:00NDND20
15:10NDND19
15:20NDND20
15:30NDND21
15:40NDND22
15:50NDND21
16:00NDND20
16:10NDND20
16:20NDND19
16:30NDND21
16:40NDND22
16:50NDND23
17:00NDND23
17:10NDND21
17:20NDND22
17:30NDND21
17:40NDND20
17:50NDND17
18:00NDND17
18:10NDND18
18:20NDND16
18:30NDND16
18:40NDND16
18:50NDND20
19:00NDND19
19:10NDND20
19:20NDND23
19:30NDND22
19:40NDND23
19:50NDND21
20:00NDND23
20:10NDND25
20:20NDND22
20:30NDND24
20:40NDND22
20:50NDND23
21:00NDND22
21:10NDND21
21:20NDND20
21:30NDND17
21:40NDND17
21:50NDND16
22:00NDND17
22:10NDND18
22:20NDND18
22:30NDND16
22:40NDND16
22:50NDND17
23:00NDND16
23:10NDND16
23:20NDND22
23:30NDND25
23:40NDND28
23:50NDND24