TEPCO : 福島第一原子力発電所における海水放射線モニタ計測結果（過去分）

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福島第一原子力発電所における海水放射線モニタ計測結果（過去分）

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○計測値一覧：2026年08月20日(CSVデータダウンロード)

放射能濃度単位：Bq/L

※検出限界値未満の場合はNDと表示されます。

計測時刻 Cs137 Cs134 全β

00:00 ND ND 15

00:10 ND ND 15

00:20 ND ND 17

00:30 ND ND 17

00:40 ND ND 17

00:50 ND ND 17

01:00 ND ND 15

01:10 ND ND 14

01:20 ND ND 13

01:30 ND ND 14

01:40 ND ND 13

01:50 ND ND 12

02:00 ND ND 13

02:10 ND ND 13

02:20 ND ND 14

02:30 ND ND 13

02:40 ND ND 14

02:50 ND ND 14

03:00 ND ND 15

03:10 ND ND 15

03:20 ND ND 13

03:30 ND ND 13

03:40 ND ND 13

03:50 ND ND 12

04:00 ND ND 9.6

04:10 ND ND 8.8

04:20 ND ND ND

04:30 ND ND ND

04:40 ND ND ND

04:50 ND ND 9.6

05:00 ND ND 8.9

05:10 ND ND 11

05:20 ND ND 16

05:30 ND ND 17

05:40 ND ND 16

05:50 ND ND 17

06:00 ND ND 18

06:10 ND ND 18

06:20 ND ND 17

06:30 ND ND 19

06:40 ND ND 21

06:50 ND ND 21

07:00 ND ND 19

07:10 ND ND 18

07:20 ND ND 18

07:30 ND ND 14

07:40 ND ND 12

07:50 ND ND 12

08:00 ND ND 14

08:10 ND ND 17

08:20 ND ND 17

08:30 ND ND 16

08:40 ND ND 14

08:50 ND ND 12

09:00 ND ND 14

09:10 ND ND 14

09:20 ND ND 13

09:30 ND ND 15

09:40 ND ND 18

09:50 ND ND 18

10:00 ND ND 15

10:10 ND ND 15

10:20 ND ND 15

10:30 ND ND 18

10:40 ND ND 14

10:50 ND ND 17

11:00 ND ND 16

11:10 ND ND 14

11:20 ND ND 14

11:30 ND ND 10

11:40 ND ND 10

11:50 ND ND 10

12:00 ND ND 8.9

12:10 ND ND 8.9

12:20 ND ND 10

12:30 ND ND 12

12:40 ND ND 16

12:50 ND ND 15

13:00 ND ND 18

13:10 ND ND 20

13:20 ND ND 20

13:30 ND ND 18

13:40 ND ND 16

13:50 ND ND 16

14:00 ND ND 16

14:10 ND ND 14

14:20 ND ND 9.9

14:30 ND ND 11

14:40 ND ND 12

14:50 ND ND 12

15:00 ND ND 14

15:10 ND ND 14

15:20 ND ND 20

15:30 ND ND 19

15:40 ND ND 17

15:50 ND ND 17

16:00 ND ND 14

16:10 ND ND 14

16:20 ND ND 11

16:30 ND ND 13

16:40 ND ND 12

16:50 ND ND 13

17:00 ND ND 15

17:10 ND ND 14

17:20 ND ND 20

17:30 ND ND 19

17:40 ND ND 19

17:50 ND ND 17

18:00 ND ND 15

18:10 ND ND 15

18:20 ND ND 11

18:30 ND ND 10

18:40 ND ND 10

18:50 ND ND 11

19:00 ND ND 12

19:10 ND ND 12

19:20 ND ND 13

19:30 ND ND 13

19:40 ND ND 12

19:50 ND ND 14

20:00 ND ND 14

20:10 ND ND 15

20:20 ND ND 13

20:30 ND ND 15

20:40 ND ND 16

20:50 ND ND 17

21:00 ND ND 17

21:10 ND ND 18

21:20 ND ND 18

21:30 ND ND 18

21:40 ND ND 20

21:50 ND ND 18

22:00 ND ND 17

22:10 ND ND 16

22:20 ND ND 17

22:30 ND ND 15

22:40 ND ND 14

22:50 ND ND 16

23:00 ND ND 16

23:10 ND ND 14

23:20 ND ND 12

23:30 ND ND 15

23:40 ND ND 13

23:50 ND ND 13

計測時刻	Cs137	Cs134	全β
00:00	ND	ND	15
00:10	ND	ND	15
00:20	ND	ND	17
00:30	ND	ND	17
00:40	ND	ND	17
00:50	ND	ND	17
01:00	ND	ND	15
01:10	ND	ND	14
01:20	ND	ND	13
01:30	ND	ND	14
01:40	ND	ND	13
01:50	ND	ND	12
02:00	ND	ND	13
02:10	ND	ND	13
02:20	ND	ND	14
02:30	ND	ND	13
02:40	ND	ND	14
02:50	ND	ND	14
03:00	ND	ND	15
03:10	ND	ND	15
03:20	ND	ND	13
03:30	ND	ND	13
03:40	ND	ND	13
03:50	ND	ND	12
04:00	ND	ND	9.6
04:10	ND	ND	8.8
04:20	ND	ND	ND
04:30	ND	ND	ND
04:40	ND	ND	ND
04:50	ND	ND	9.6
05:00	ND	ND	8.9
05:10	ND	ND	11
05:20	ND	ND	16
05:30	ND	ND	17
05:40	ND	ND	16
05:50	ND	ND	17
06:00	ND	ND	18
06:10	ND	ND	18
06:20	ND	ND	17
06:30	ND	ND	19
06:40	ND	ND	21
06:50	ND	ND	21
07:00	ND	ND	19
07:10	ND	ND	18
07:20	ND	ND	18
07:30	ND	ND	14
07:40	ND	ND	12
07:50	ND	ND	12
08:00	ND	ND	14
08:10	ND	ND	17
08:20	ND	ND	17
08:30	ND	ND	16
08:40	ND	ND	14
08:50	ND	ND	12
09:00	ND	ND	14
09:10	ND	ND	14
09:20	ND	ND	13
09:30	ND	ND	15
09:40	ND	ND	18
09:50	ND	ND	18
10:00	ND	ND	15
10:10	ND	ND	15
10:20	ND	ND	15
10:30	ND	ND	18
10:40	ND	ND	14
10:50	ND	ND	17
11:00	ND	ND	16
11:10	ND	ND	14
11:20	ND	ND	14
11:30	ND	ND	10
11:40	ND	ND	10
11:50	ND	ND	10
12:00	ND	ND	8.9
12:10	ND	ND	8.9
12:20	ND	ND	10
12:30	ND	ND	12
12:40	ND	ND	16
12:50	ND	ND	15
13:00	ND	ND	18
13:10	ND	ND	20
13:20	ND	ND	20
13:30	ND	ND	18
13:40	ND	ND	16
13:50	ND	ND	16
14:00	ND	ND	16
14:10	ND	ND	14
14:20	ND	ND	9.9
14:30	ND	ND	11
14:40	ND	ND	12
14:50	ND	ND	12
15:00	ND	ND	14
15:10	ND	ND	14
15:20	ND	ND	20
15:30	ND	ND	19
15:40	ND	ND	17
15:50	ND	ND	17
16:00	ND	ND	14
16:10	ND	ND	14
16:20	ND	ND	11
16:30	ND	ND	13
16:40	ND	ND	12
16:50	ND	ND	13
17:00	ND	ND	15
17:10	ND	ND	14
17:20	ND	ND	20
17:30	ND	ND	19
17:40	ND	ND	19
17:50	ND	ND	17
18:00	ND	ND	15
18:10	ND	ND	15
18:20	ND	ND	11
18:30	ND	ND	10
18:40	ND	ND	10
18:50	ND	ND	11
19:00	ND	ND	12
19:10	ND	ND	12
19:20	ND	ND	13
19:30	ND	ND	13
19:40	ND	ND	12
19:50	ND	ND	14
20:00	ND	ND	14
20:10	ND	ND	15
20:20	ND	ND	13
20:30	ND	ND	15
20:40	ND	ND	16
20:50	ND	ND	17
21:00	ND	ND	17
21:10	ND	ND	18
21:20	ND	ND	18
21:30	ND	ND	18
21:40	ND	ND	20
21:50	ND	ND	18
22:00	ND	ND	17
22:10	ND	ND	16
22:20	ND	ND	17
22:30	ND	ND	15
22:40	ND	ND	14
22:50	ND	ND	16
23:00	ND	ND	16
23:10	ND	ND	14
23:20	ND	ND	12
23:30	ND	ND	15
23:40	ND	ND	13
23:50	ND	ND	13