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

○Information

○Measurement value list ： 2026/08/27(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND15
00:10NDND18
00:20NDND16
00:30NDND16
00:40NDND15
00:50NDND14
01:00NDND15
01:10NDND13
01:20NDND13
01:30NDND14
01:40NDND14
01:50NDND16
02:00NDND17
02:10NDND18
02:20NDND16
02:30NDND13
02:40NDND15
02:50NDND16
03:00NDND13
03:10NDND13
03:20NDND14
03:30NDND16
03:40NDND16
03:50NDND16
04:00NDND16
04:10NDND14
04:20NDND18
04:30NDND16
04:40NDND15
04:50NDND16
05:00NDND16
05:10NDND18
05:20NDND12
05:30NDND14
05:40NDND16
05:50NDND15
06:00NDND16
06:10NDND16
06:20NDND19
06:30NDND17
06:40NDND16
06:50NDND17
07:00NDND16
07:10NDND16
07:20NDND17
07:30NDND21
07:40NDND19
07:50NDND20
08:00NDND22
08:10NDND21
08:20NDND20
08:30NDND17
08:40NDND18
08:50NDND14
09:00NDND10
09:10NDND9.5
09:20NDND9.9
09:30NDND9.3
09:40NDND9.6
09:50NDND12
10:00NDND14
10:10NDND14
10:20NDND15
10:30NDND17
10:40---
10:50---
11:00---
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---
13:40---
13:50---
14:00---
14:10---
14:20---
14:30---
14:40---
14:50---
15:00---
15:10---
15:20---
15:30---
15:40---
15:50---
16:00---
16:10---
16:20---
16:30---
16:40---
16:50---
17:00NDND16
17:10NDND17
17:20NDND18
17:30NDND16
17:40NDND18
17:50NDND14
18:00NDND15
18:10NDND16
18:20NDND17
18:30NDND18
18:40NDND16
18:50NDND18
19:00NDND20
19:10NDND19
19:20NDND20
19:30NDND19
19:40NDND20
19:50NDND19
20:00NDND21
20:10NDND19
20:20NDND20
20:30NDND22
20:40NDND23
20:50NDND24
21:00NDND22
21:10NDND22
21:20NDND20
21:30NDND19
21:40NDND16
21:50NDND17
22:00NDND15
22:10NDND16
22:20NDND17
22:30NDND17
22:40NDND17
22:50NDND16
23:00NDND16
23:10NDND16
23:20NDND13
23:30NDND13
23:40NDND13
23:50NDND10