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

○Information

○Measurement value list : 2025/10/09(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND16
00:10NDND16
00:20NDND13
00:30NDND12
00:40NDND12
00:50NDND11
01:00NDND8.9
01:10NDNDND
01:20NDND9.0
01:30NDND10
01:40NDNDND
01:50NDNDND
02:00NDNDND
02:10NDND9.3
02:20NDND9.9
02:30NDND8.6
02:40NDND12
02:50NDND12
03:00NDND13
03:10NDND13
03:20NDND14
03:30NDND16
03:40NDND16
03:50NDND15
04:00NDND14
04:10NDND13
04:20NDND13
04:30NDND10
04:40NDNDND
04:50NDNDND
05:00NDNDND
05:10NDNDND
05:20NDNDND
05:30NDNDND
05:40NDNDND
05:50NDND9.9
06:00NDND9.7
06:10NDND11
06:20NDND11
06:30NDND10
06:40NDND12
06:50NDND11
07:00NDND13
07:10NDND14
07:20NDND12
07:30NDND14
07:40NDND16
07:50NDND16
08:00NDND16
08:10NDND15
08:20NDND17
08:30NDND15
08:40NDND13
08:50NDND11
09:00NDND11
09:10NDND12
09:20NDND12
09:30NDND12
09:40NDND15
09:50NDND16
10:00NDND18
10:10NDND16
10:20NDND16
10:30NDND16
10:40NDND15
10:50NDND14
11:00NDND13
11:10NDND14
11:20NDND15
11:30NDND14
11:40NDND13
11:50NDND14
12:00NDND13
12:10NDND14
12:20NDND15
12:30NDND14
12:40NDND15
12:50NDND16
13:00NDND19
13:10NDND18
13:20NDND14
13:30NDND16
13:40NDND14
13:50NDND13
14:00NDND10
14:10---
14:20NDND11
14:30NDND9.7
14:40NDND9.5
14:50NDND8.4
15:00NDND11
15:10NDND9.0
15:20NDND12
15:30NDND14
15:40NDND14
15:50NDND15
16:00NDND14
16:10NDND16
16:20NDND16
16:30NDND17
16:40NDND20
16:50NDND20
17:00NDND18
17:10NDND20
17:20NDND19
17:30NDND19
17:40NDND16
17:50NDND17
18:00NDND18
18:10NDND19
18:20NDND17
18:30NDND16
18:40NDND16
18:50NDND16
19:00NDND16
19:10NDND13
19:20NDND13
19:30NDND13
19:40NDND14
19:50NDND11
20:00NDND11
20:10NDND11
20:20NDND13
20:30NDND14
20:40NDND12
20:50NDND13
21:00NDND13
21:10NDND14
21:20NDND13
21:30NDND12
21:40NDND12
21:50NDND14
22:00NDND13
22:10NDND12
22:20NDND10
22:30NDND10
22:40NDND11
22:50NDND9.5
23:00NDND11
23:10NDNDND
23:20NDND9.7
23:30NDND10
23:40NDND12
23:50NDND12