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

○Information

○Measurement value list ： 2026/10/16(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
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15:20NDND18
15:30NDND17
15:40NDND17
15:50NDND20
16:00NDND21
16:10NDND21
16:20NDND20
16:30NDND20
16:40NDND18
16:50NDND18
17:00NDND16
17:10NDND14
17:20NDND12
17:30NDND14
17:40NDND15
17:50NDND13
18:00NDND14
18:10NDND14
18:20NDND17
18:30NDND15
18:40NDND14
18:50NDND14
19:00NDND14
19:10NDND14
19:20NDND15
19:30NDND16
19:40NDND18
19:50NDND18
20:00NDND18
20:10NDND19
20:20NDND18
20:30NDND17
20:40NDND15
20:50NDND16
21:00NDND17
21:10NDND16
21:20NDND16
21:30NDND15
21:40NDND16
21:50NDND15
22:00NDND16
22:10NDND17
22:20NDND20
22:30NDND20
22:40NDND18
22:50NDND17
23:00NDND14
23:10NDND13
23:20NDND9.7
23:30NDND9.0
23:40NDND9.3
23:50NDND9.5