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

○Information

○Measurement value list ： 2026/05/05(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

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