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

○Information

○Measurement value list ： 2025/10/02(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND19
00:10NDND18
00:20NDND18
00:30NDND18
00:40NDND17
00:50NDND14
01:00NDND17
01:10NDND17
01:20NDND17
01:30NDND14
01:40NDND18
01:50NDND20
02:00NDND16
02:10NDND16
02:20NDND15
02:30NDND14
02:40NDND14
02:50NDND16
03:00NDND18
03:10NDND18
03:20NDND19
03:30NDND21
03:40NDND19
03:50NDND15
04:00NDND12
04:10NDND11
04:20NDND8.9
04:30NDNDND
04:40NDND9.0
04:50NDND9.3
05:00NDND12
05:10NDND14
05:20NDND15
05:30NDND17
05:40NDND17
05:50NDND15
06:00NDND12
06:10NDND13
06:20NDND13
06:30NDND14
06:40NDND14
06:50NDND16
07:00NDND20
07:10NDND17
07:20NDND17
07:30NDND15
07:40NDND14
07:50NDND15
08:00NDND14
08:10NDND14
08:20NDND14
08:30NDND14
08:40NDND16
08:50---
09:00---
09:10---
09:20---
09:30---
09:40---
09:50---
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---
13:30NDND10
13:40NDND12
13:50NDND13
14:00NDND17
14:10NDND16
14:20NDND15
14:30NDND16
14:40NDND17
14:50NDND16
15:00NDND12
15:10NDND12
15:20NDND10
15:30NDNDND
15:40NDNDND
15:50NDNDND
16:00NDNDND
16:10NDNDND
16:20NDND9.0
16:30NDND9.7
16:40NDND11
16:50NDND12
17:00NDND12
17:10NDND11
17:20NDND13
17:30NDND12
17:40NDND11
17:50NDND13
18:00NDND13
18:10NDND13
18:20NDND11
18:30NDND12
18:40NDND11
18:50NDND12
19:00NDND12
19:10NDND14
19:20NDND14
19:30NDND15
19:40NDND16
19:50NDND16
20:00NDND16
20:10NDND17
20:20NDND19
20:30NDND18
20:40NDND18
20:50NDND14
21:00NDND14
21:10NDND14
21:20NDND14
21:30NDND12
21:40NDND11
21:50NDND11
22:00NDND12
22:10NDND10
22:20NDND9.0
22:30NDND9.9
22:40NDND10
22:50NDND10
23:00NDND10
23:10NDND11
23:20NDND11
23:30NDND11
23:40NDND13
23:50NDND12