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

○Information

○Measurement value list ： 2026/02/18(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND22
00:10NDND22
00:20NDND18
00:30NDND16
00:40NDND15
00:50NDND18
01:00NDND18
01:10NDND19
01:20NDND21
01:30NDND19
01:40NDND20
01:50NDND21
02:00NDND22
02:10NDND22
02:20NDND20
02:30NDND24
02:40NDND23
02:50NDND21
03:00NDND19
03:10NDND20
03:20NDND21
03:30NDND18
03:40NDND19
03:50NDND21
04:00NDND25
04:10NDND23
04:20NDND24
04:30NDND25
04:40NDND24
04:50NDND25
05:00NDND22
05:10NDND21
05:20NDND21
05:30NDND21
05:40NDND22
05:50NDND18
06:00NDND17
06:10NDND16
06:20NDND14
06:30NDND12
06:40NDND13
06:50NDND20
07:00NDND21
07:10NDND24
07:20NDND25
07:30NDND24
07:40NDND23
07:50NDND21
08:00NDND23
08:10NDND23
08:20NDND24
08:30NDND25
08:40NDND25
08:50NDND22
09:00NDND21
09:10NDND21
09:20NDND21
09:30NDND21
09:40NDND20
09:50NDND21
10:00NDND21
10:10NDND20
10:20NDND20
10:30NDND22
10:40NDND25
10:50NDND23
11:00NDND24
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---
16:10NDND23
16:20NDND24
16:30NDND25
16:40NDND25
16:50NDND26
17:00NDND25
17:10NDND27
17:20NDND27
17:30NDND25
17:40NDND26
17:50NDND26
18:00NDND23
18:10NDND23
18:20NDND23
18:30NDND24
18:40NDND23
18:50NDND21
19:00NDND23
19:10NDND20
19:20NDND20
19:30NDND18
19:40NDND19
19:50NDND22
20:00NDND23
20:10NDND25
20:20NDND24
20:30NDND25
20:40NDND27
20:50NDND25
21:00NDND21
21:10NDND18
21:20NDND19
21:30NDND19
21:40NDND18
21:50NDND20
22:00NDND22
22:10NDND24
22:20NDND27
22:30NDND28
22:40NDND26
22:50NDND26
23:00NDND28
23:10NDND25
23:20NDND24
23:30NDND21
23:40NDND21
23:50NDND21