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

○Information

○Measurement value list : 2026/06/02(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND17
00:10NDND14
00:20NDND14
00:30NDND14
00:40NDND11
00:50NDND13
01:00NDND12
01:10NDND13
01:20NDND12
01:30NDND11
01:40NDND10
01:50NDND10
02:00NDND12
02:10NDND11
02:20NDND10
02:30NDND9.7
02:40NDND11
02:50NDND12
03:00NDND11
03:10NDND13
03:20NDND15
03:30NDND13
03:40NDND12
03:50NDND12
04:00NDND13
04:10NDND11
04:20NDND8.9
04:30NDND8.9
04:40NDND9.9
04:50NDND8.6
05:00NDND8.8
05:10NDND9.3
05:20NDND15
05:30NDND16
05:40NDND17
05:50NDND18
06:00NDND18
06:10NDND20
06:20NDND17
06:30NDND19
06:40NDND18
06:50NDND18
07:00NDND16
07:10NDND16
07:20NDND15
07:30NDND13
07:40NDND11
07:50NDND10
08:00NDND12
08:10NDND8.5
08:20NDNDND
08:30NDND11
08:40NDND13
08:50NDND13
09:00NDND12
09:10NDND15
09:20NDND17
09:30NDND15
09:40NDND15
09:50NDND16
10:00NDND17
10:10NDND16
10:20NDND14
10:30NDND16
10:40NDND14
10:50NDND14
11:00NDND13
11:10NDND12
11:20NDND15
11:30NDND15
11:40NDND18
11:50NDND19
12:00NDND21
12:10NDND24
12:20NDND21
12:30NDND22
12:40NDND20
12:50NDND20
13:00NDND18
13:10NDND17
13:20NDND20
13:30NDND19
13:40NDND20
13:50NDND21
14:00NDND23
14:10NDND22
14:20NDND23
14:30NDND23
14:40NDND22
14:50NDND21
15:00NDND19
15:10NDND21
15:20NDND17
15:30NDND17
15:40NDND16
15:50NDND17
16:00NDND18
16:10NDND17
16:20NDND16
16:30NDND17
16:40NDND18
16:50NDND17
17:00NDND17
17:10NDND14
17:20NDND17
17:30NDND18
17:40NDND20
17:50NDND19
18:00NDND18
18:10NDND21
18:20NDND19
18:30NDND15
18:40NDND15
18:50NDND16
19:00NDND15
19:10NDND14
19:20NDND12
19:30NDND16
19:40NDND14
19:50NDND14
20:00NDND16
20:10NDND16
20:20NDND18
20:30NDND16
20:40NDND16
20:50NDND15
21:00NDND14
21:10NDND17
21:20NDND17
21:30NDND16
21:40NDND17
21:50NDND19
22:00NDND20
22:10NDND18
22:20NDND18
22:30NDND20
22:40NDND20
22:50NDND18
23:00NDND18
23:10NDND22
23:20NDND21
23:30NDND18
23:40NDND18
23:50NDND19