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

○Information

○Measurement value list : 2025/09/19(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND11
00:10NDND11
00:20NDND13
00:30NDND16
00:40NDND16
00:50NDND15
01:00NDND12
01:10NDND12
01:20NDND13
01:30NDND13
01:40NDND12
01:50NDND12
02:00NDND10
02:10NDND10
02:20NDND9.6
02:30NDND9.3
02:40NDND9.0
02:50NDND12
03:00NDND15
03:10NDND17
03:20NDND18
03:30NDND18
03:40NDND18
03:50NDND16
04:00NDND16
04:10NDND12
04:20NDND11
04:30NDND11
04:40NDND12
04:50NDND13
05:00NDND16
05:10NDND16
05:20NDND15
05:30NDND14
05:40NDND12
05:50NDND14
06:00NDND10
06:10NDND9.3
06:20NDND11
06:30NDND12
06:40NDND14
06:50NDND14
07:00NDND16
07:10NDND18
07:20NDND17
07:30NDND16
07:40NDND15
07:50NDND13
08:00NDND14
08:10NDND13
08:20NDND12
08:30NDND11
08:40NDND12
08:50NDND12
09:00NDND10
09:10NDND12
09:20NDND13
09:30NDND14
09:40NDND12
09:50NDND10
10:00NDND10
10:10NDND8.6
10:20NDNDND
10:30NDNDND
10:40NDND8.4
10:50NDND9.0
11:00NDNDND
11:10NDND10
11:20NDND13
11:30NDND14
11:40NDND16
11:50NDND17
12:00NDND21
12:10NDND19
12:20NDND18
12:30NDND16
12:40NDND11
12:50NDND11
13:00NDND8.6
13:10NDND9.6
13:20NDND10
13:30NDND13
13:40NDND17
13:50NDND17
14:00NDND16
14:10NDND14
14:20NDND15
14:30NDND13
14:40NDND14
14:50NDND13
15:00NDND16
15:10NDND16
15:20NDND12
15:30NDND12
15:40NDND12
15:50NDND14
16:00NDND14
16:10NDND15
16:20NDND18
16:30NDND19
16:40NDND19
16:50NDND18
17:00NDND15
17:10NDND16
17:20NDND16
17:30NDND14
17:40NDND12
17:50NDND11
18:00NDND12
18:10NDND13
18:20NDND13
18:30NDND16
18:40NDND18
18:50NDND19
19:00NDND22
19:10NDND19
19:20NDND19
19:30NDND18
19:40NDND17
19:50NDND15
20:00NDND12
20:10NDND14
20:20NDND13
20:30NDND14
20:40NDND16
20:50NDND18
21:00NDND19
21:10NDND17
21:20NDND17
21:30NDND13
21:40NDND11
21:50NDND9.9
22:00NDNDND
22:10NDNDND
22:20NDNDND
22:30NDND10
22:40NDND12
22:50NDND11
23:00NDND12
23:10NDND13
23:20NDND14
23:30NDND13
23:40NDND9.9
23:50NDND10