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

○Information

○Measurement value list ： 2026/01/12(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND25
00:10NDND27
00:20NDND25
00:30NDND23
00:40NDND24
00:50NDND21
01:00NDND20
01:10NDND21
01:20NDND24
01:30NDND21
01:40NDND20
01:50NDND24
02:00NDND21
02:10NDND19
02:20NDND16
02:30NDND17
02:40NDND17
02:50NDND17
03:00NDND19
03:10NDND19
03:20NDND19
03:30NDND20
03:40NDND20
03:50NDND20
04:00NDND20
04:10NDND20
04:20NDND21
04:30NDND21
04:40NDND18
04:50NDND18
05:00NDND20
05:10NDND20
05:20NDND20
05:30NDND19
05:40NDND21
05:50NDND20
06:00NDND20
06:10NDND21
06:20NDND19
06:30NDND21
06:40NDND21
06:50NDND21
07:00NDND20
07:10NDND18
07:20NDND19
07:30NDND17
07:40NDND18
07:50NDND19
08:00NDND18
08:10NDND18
08:20NDND21
08:30NDND21
08:40NDND20
08:50NDND18
09:00NDND20
09:10NDND18
09:20NDND17
09:30NDND18
09:40NDND20
09:50NDND20
10:00NDND20
10:10NDND22
10:20NDND23
10:30NDND23
10:40NDND23
10:50NDND22
11:00NDND22
11:10NDND21
11:20NDND18
11:30NDND17
11:40NDND18
11:50NDND18
12:00NDND20
12:10NDND22
12:20NDND21
12:30NDND22
12:40NDND22
12:50NDND21
13:00NDND18
13:10NDND16
13:20NDND20
13:30NDND20
13:40NDND15
13:50NDND17
14:00NDND20
14:10NDND23
14:20NDND23
14:30NDND22
14:40NDND25
14:50NDND24
15:00NDND24
15:10NDND21
15:20NDND17
15:30NDND17
15:40NDND17
15:50NDND17
16:00NDND19
16:10NDND18
16:20NDND19
16:30NDND19
16:40NDND20
16:50NDND20
17:00NDND19
17:10NDND21
17:20NDND23
17:30NDND23
17:40NDND23
17:50NDND25
18:00NDND23
18:10NDND22
18:20NDND21
18:30NDND20
18:40NDND20
18:50NDND19
19:00NDND20
19:10NDND17
19:20NDND16
19:30NDND15
19:40NDND16
19:50NDND16
20:00NDND18
20:10NDND18
20:20NDND18
20:30NDND18
20:40NDND18
20:50NDND15
21:00NDND13
21:10NDND16
21:20NDND16
21:30NDND17
21:40NDND15
21:50NDND19
22:00NDND20
22:10NDND18
22:20NDND17
22:30NDND17
22:40NDND18
22:50NDND16
23:00NDND16
23:10NDND15
23:20NDND19
23:30NDND20
23:40NDND18
23:50NDND18