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

○Information

○Measurement value list ： 2026/01/27(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND20
00:10NDND19
00:20NDND19
00:30NDND16
00:40NDND18
00:50NDND18
01:00NDND16
01:10NDND16
01:20NDND16
01:30NDND17
01:40NDND15
01:50NDND14
02:00NDND15
02:10NDND16
02:20NDND17
02:30NDND18
02:40NDND17
02:50NDND18
03:00NDND18
03:10NDND17
03:20NDND16
03:30NDND16
03:40NDND17
03:50NDND18
04:00NDND17
04:10NDND19
04:20NDND21
04:30NDND21
04:40NDND20
04:50NDND18
05:00NDND18
05:10NDND19
05:20NDND16
05:30NDND14
05:40NDND17
05:50NDND18
06:00NDND19
06:10NDND16
06:20NDND17
06:30NDND18
06:40NDND15
06:50NDND18
07:00NDND20
07:10NDND19
07:20NDND21
07:30NDND20
07:40NDND20
07:50NDND17
08:00NDND14
08:10NDND16
08:20NDND14
08:30NDND12
08:40NDND13
08:50NDND15
09:00NDND18
09:10NDND17
09:20NDND20
09:30NDND24
09:40NDND22
09:50NDND24
10:00NDND22
10:10NDND23
10:20NDND21
10:30NDND21
10:40NDND21
10:50NDND18
11:00NDND18
11:10---
11:20---
11:30---
11:40---
11:50---
12:00---
12:10---
12:20---
12:30---
12:40---
12:50---
13:00---
13:10---
13:20---
13:30---
13:40NDND16
13:50NDND18
14:00NDND16
14:10NDND20
14:20NDND21
14:30NDND19
14:40NDND17
14:50NDND19
15:00NDND19
15:10NDND16
15:20NDND14
15:30NDND18
15:40NDND22
15:50NDND21
16:00NDND23
16:10NDND26
16:20NDND28
16:30NDND26
16:40NDND25
16:50NDND24
17:00NDND23
17:10NDND22
17:20NDND22
17:30NDND22
17:40NDND23
17:50NDND22
18:00NDND22
18:10NDND22
18:20NDND21
18:30NDND23
18:40NDND22
18:50NDND22
19:00NDND22
19:10NDND19
19:20NDND18
19:30NDND17
19:40NDND17
19:50NDND18
20:00NDND17
20:10NDND20
20:20NDND20
20:30NDND19
20:40NDND20
20:50NDND19
21:00NDND20
21:10NDND22
21:20NDND20
21:30NDND22
21:40NDND22
21:50NDND23
22:00NDND25
22:10NDND22
22:20NDND24
22:30NDND25
22:40NDND24
22:50NDND22
23:00NDND19
23:10NDND20
23:20NDND18
23:30NDND16
23:40NDND14
23:50NDND17