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

○Information

○Measurement value list ： 2026/01/22(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND14
00:10NDND14
00:20NDND16
00:30NDND15
00:40NDND12
00:50NDND12
01:00NDND16
01:10NDND16
01:20NDND15
01:30NDND18
01:40NDND21
01:50NDND20
02:00NDND20
02:10NDND19
02:20NDND17
02:30NDND14
02:40NDND15
02:50NDND16
03:00NDND16
03:10NDND15
03:20NDND16
03:30NDND18
03:40NDND18
03:50NDND17
04:00NDND17
04:10NDND19
04:20NDND18
04:30NDND17
04:40NDND16
04:50NDND16
05:00NDND17
05:10NDND15
05:20NDND16
05:30NDND19
05:40NDND20
05:50NDND19
06:00NDND20
06:10NDND19
06:20NDND20
06:30NDND17
06:40NDND15
06:50NDND14
07:00NDND13
07:10NDND14
07:20NDND15
07:30NDND16
07:40NDND17
07:50NDND19
08:00NDND15
08:10NDND15
08:20NDND12
08:30NDND13
08:40NDND12
08:50NDND12
09:00NDND17
09:10NDND14
09:20NDND17
09:30NDND15
09:40NDND16
09:50NDND17
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---
13:30---
13:40---
13:50---
14:00---
14:10---
14:20---
14:30---
14:40---
14:50---
15:00---
15:10---
15:20---
15:30---
15:40---
15:50---
16:00---
16:10---
16:20---
16:30---
16:40NDND22
16:50NDND20
17:00NDND19
17:10NDND21
17:20NDND20
17:30NDND20
17:40NDND18
17:50NDND21
18:00NDND20
18:10NDND21
18:20NDND20
18:30NDND22
18:40NDND22
18:50NDND21
19:00NDND20
19:10NDND18
19:20NDND19
19:30NDND18
19:40NDND19
19:50NDND16
20:00NDND17
20:10NDND16
20:20NDND16
20:30NDND14
20:40NDND12
20:50NDND12
21:00NDND12
21:10NDND13
21:20NDND12
21:30NDND15
21:40NDND16
21:50NDND16
22:00NDND18
22:10NDND16
22:20NDND14
22:30NDND15
22:40NDND13
22:50NDND15
23:00NDND17
23:10NDND19
23:20NDND19
23:30NDND18
23:40NDND18
23:50NDND17