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

○Information

○Measurement value list ： 2026/02/13(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND24
00:10NDND24
00:20NDND23
00:30NDND22
00:40NDND20
00:50NDND24
01:00NDND21
01:10NDND22
01:20NDND25
01:30NDND28
01:40NDND28
01:50NDND24
02:00NDND26
02:10NDND24
02:20NDND21
02:30NDND19
02:40NDND18
02:50NDND19
03:00NDND20
03:10NDND20
03:20NDND20
03:30NDND20
03:40NDND22
03:50NDND23
04:00NDND23
04:10NDND23
04:20NDND23
04:30NDND19
04:40NDND21
04:50NDND19
05:00NDND18
05:10NDND19
05:20NDND20
05:30NDND21
05:40NDND22
05:50NDND23
06:00NDND20
06:10NDND21
06:20NDND20
06:30NDND21
06:40NDND19
06:50NDND18
07:00NDND21
07:10NDND22
07:20NDND20
07:30NDND22
07:40NDND22
07:50NDND22
08:00NDND23
08:10NDND21
08:20NDND21
08:30NDND19
08:40NDND19
08:50NDND16
09:00NDND16
09:10NDND17
09:20NDND18
09:30NDND20
09:40NDND20
09:50NDND23
10:00NDND23
10:10NDND25
10:20NDND26
10:30NDND23
10:40NDND24
10:50NDND23
11:00NDND23
11:10NDND21
11:20NDND20
11:30NDND20
11:40NDND20
11:50NDND21
12:00NDND21
12:10NDND20
12:20NDND21
12:30NDND23
12:40NDND27
12:50NDND26
13:00NDND28
13:10NDND29
13:20NDND28
13:30NDND28
13:40NDND25
13:50NDND25
14:00NDND23
14:10NDND23
14:20NDND24
14:30NDND23
14:40NDND22
14:50NDND24
15:00NDND23
15:10NDND23
15:20NDND22
15:30NDND22
15:40NDND21
15:50NDND19
16:00NDND19
16:10NDND18
16:20NDND16
16:30NDND19
16:40NDND18
16:50NDND21
17:00NDND20
17:10NDND20
17:20NDND21
17:30NDND20
17:40NDND22
17:50NDND21
18:00NDND20
18:10NDND20
18:20NDND20
18:30NDND20
18:40NDND21
18:50NDND23
19:00NDND21
19:10NDND20
19:20NDND21
19:30NDND23
19:40NDND22
19:50NDND18
20:00NDND20
20:10NDND21
20:20NDND20
20:30NDND18
20:40NDND18
20:50NDND20
21:00NDND22
21:10NDND21
21:20NDND22
21:30NDND23
21:40NDND20
21:50NDND20
22:00NDND18
22:10NDND18
22:20NDND16
22:30NDND16
22:40NDND17
22:50NDND15
23:00NDND15
23:10NDND14
23:20NDND15
23:30NDND13
23:40NDND15
23:50NDND18