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

○Information

○Measurement value list ： 2025/10/16(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND18
00:10NDND17
00:20NDND16
00:30NDND16
00:40NDND16
00:50NDND14
01:00NDND15
01:10NDND17
01:20NDND16
01:30NDND14
01:40NDND16
01:50NDND17
02:00NDND18
02:10NDND16
02:20NDND16
02:30NDND16
02:40NDND17
02:50NDND15
03:00NDND12
03:10NDND14
03:20NDND16
03:30NDND18
03:40NDND16
03:50NDND17
04:00NDND18
04:10NDND18
04:20NDND16
04:30NDND13
04:40NDND11
04:50NDND9.2
05:00NDND8.6
05:10NDND8.5
05:20NDND8.4
05:30NDND10
05:40NDND12
05:50NDND14
06:00NDND15
06:10NDND14
06:20NDND13
06:30NDND14
06:40NDND11
06:50NDND9.7
07:00NDND10
07:10NDND9.6
07:20NDND8.4
07:30NDNDND
07:40NDND9.5
07:50NDND9.3
08:00NDNDND
08:10NDND10
08:20NDND11
08:30NDND11
08:40NDND11
08:50NDND10
09:00NDND12
09:10NDND12
09:20NDND13
09:30NDND14
09:40NDND14
09:50NDND15
10:00NDND13
10:10NDND14
10:20---
10:30---
10:40---
10:50---
11:00---
11:10---
11:20---
11:30---
11:40---
11:50---
12:00NDND14
12:10NDND12
12:20NDND11
12:30NDND16
12:40NDND14
12:50NDND13
13:00NDND13
13:10NDND13
13:20NDND15
13:30NDND13
13:40NDND12
13:50NDND10
14:00NDND10
14:10NDND13
14:20NDND12
14:30NDND10
14:40NDND13
14:50NDND16
15:00NDND16
15:10NDND12
15:20NDND13
15:30NDND14
15:40NDND13
15:50NDND13
16:00NDND13
16:10NDND13
16:20NDND11
16:30NDND13
16:40NDND11
16:50NDND11
17:00NDND12
17:10NDND15
17:20NDND16
17:30NDND17
17:40NDND19
17:50NDND18
18:00NDND17
18:10NDND17
18:20NDND14
18:30NDND14
18:40NDND11
18:50NDND12
19:00NDND13
19:10NDND11
19:20NDND14
19:30NDND13
19:40NDND17
19:50NDND17
20:00NDND15
20:10NDND15
20:20NDND17
20:30NDND14
20:40NDND16
20:50NDND18
21:00NDND18
21:10NDND20
21:20NDND17
21:30NDND22
21:40NDND18
21:50NDND14
22:00NDND15
22:10NDND14
22:20NDND14
22:30NDND13
22:40NDND14
22:50NDND14
23:00NDND12
23:10NDND13
23:20NDND15
23:30NDND15
23:40NDND17
23:50NDND20