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

○Information

○Measurement value list ： 2026/02/19(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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