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

○Information

○Measurement value list ： 2025/11/26(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND21
00:10NDND20
00:20NDND21
00:30NDND17
00:40NDND15
00:50NDND15
01:00NDND15
01:10NDND16
01:20NDND20
01:30NDND21
01:40NDND23
01:50NDND24
02:00NDND24
02:10NDND23
02:20NDND21
02:30NDND20
02:40NDND19
02:50NDND16
03:00NDND16
03:10NDND18
03:20NDND18
03:30NDND17
03:40NDND17
03:50NDND19
04:00NDND18
04:10NDND17
04:20NDND17
04:30NDND17
04:40NDND18
04:50NDND19
05:00NDND19
05:10NDND18
05:20NDND16
05:30NDND16
05:40NDND16
05:50NDND14
06:00NDND14
06:10NDND15
06:20NDND18
06:30NDND18
06:40NDND16
06:50NDND18
07:00NDND19
07:10NDND20
07:20NDND18
07:30NDND18
07:40NDND20
07:50NDND18
08:00NDND18
08:10NDND15
08:20NDND15
08:30NDND16
08:40NDND15
08:50NDND17
09:00NDND15
09:10NDND16
09:20NDND16
09:30NDND15
09:40NDND16
09:50NDND15
10:00---
10:10---
10:20---
10:30---
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---
17:00---
17:10---
17:20---
17:30---
17:40NDND14
17:50NDND11
18:00NDND13
18:10NDND13
18:20NDND15
18:30NDND14
18:40NDND14
18:50NDND16
19:00NDND14
19:10NDND14
19:20NDND13
19:30NDND16
19:40NDND12
19:50NDND12
20:00NDND12
20:10NDND11
20:20NDND12
20:30NDND11
20:40NDND13
20:50NDND15
21:00NDND20
21:10NDND19
21:20NDND17
21:30NDND17
21:40NDND17
21:50NDND13
22:00NDND9.3
22:10NDND11
22:20NDND13
22:30NDND14
22:40NDND13
22:50NDND14
23:00NDND16
23:10NDND14
23:20NDND11
23:30NDND12
23:40NDND14
23:50NDND15