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

○Information

○Measurement value list ： 2025/10/17(CSV Download)

Radioactivity Concentration Unit:Bq/L

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

TimeCs137Cs134Totalβ
00:00NDND23
00:10NDND21
00:20NDND20
00:30NDND22
00:40NDND20
00:50NDND16
01:00NDND15
01:10NDND15
01:20NDND17
01:30NDND13
01:40NDND13
01:50NDND13
02:00NDND15
02:10NDND15
02:20NDND12
02:30NDND14
02:40NDND14
02:50NDND16
03:00NDND13
03:10NDND14
03:20NDND14
03:30NDND14
03:40NDND14
03:50NDND12
04:00NDND14
04:10NDND13
04:20NDND13
04:30NDND13
04:40NDND12
04:50NDND12
05:00NDND12
05:10NDND12
05:20NDND11
05:30NDND14
05:40NDND14
05:50NDND14
06:00NDND15
06:10NDND14
06:20NDND14
06:30NDND12
06:40NDND11
06:50NDND10
07:00NDND11
07:10NDND10
07:20NDND11
07:30NDND11
07:40NDND13
07:50NDND14
08:00NDND12
08:10NDND13
08:20NDND13
08:30NDND13
08:40NDND14
08:50NDND12
09:00NDND11
09:10NDND11
09:20NDND11
09:30NDND11
09:40NDND8.4
09:50NDND9.0
10:00NDND8.5
10:10NDND8.6
10:20NDND9.9
10:30NDND12
10:40NDND14
10:50NDND13
11:00NDND15
11:10NDND17
11:20NDND16
11:30NDND15
11:40NDND14
11:50NDND16
12:00NDND14
12:10NDND11
12:20NDND9.0
12:30NDNDND
12:40NDNDND
12:50NDNDND
13:00NDND8.6
13:10NDND12
13:20NDND14
13:30NDND15
13:40---
13:50---
14:00---
14:10---
14:20---
14:30NDND12
14:40NDND10
14:50NDND12
15:00NDND13
15:10NDND13
15:20NDND11
15:30NDND9.3
15:40NDND10
15:50NDND10
16:00NDNDND
16:10NDND8.9
16:20---
16:30---
16:40---
16:50---
17:00---
17:10---
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18:00---
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19:00---
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20:00---
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21:00---
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22:00---
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23:00---
23:10---
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23:50---