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07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 12

00:10 ND ND 14

00:20 ND ND 13

00:30 ND ND 14

00:40 ND ND 17

00:50 ND ND 15

01:00 ND ND 16

01:10 ND ND 15

01:20 ND ND 17

01:30 ND ND 18

01:40 ND ND 16

01:50 ND ND 15

02:00 ND ND 12

02:10 ND ND 12

02:20 ND ND 11

02:30 ND ND 8.5

02:40 ND ND 10

02:50 ND ND 9.7

03:00 ND ND 12

03:10 ND ND 10

03:20 ND ND 9.0

03:30 ND ND 10

03:40 ND ND 11

03:50 ND ND 13

04:00 ND ND 10

04:10 ND ND 14

04:20 ND ND 14

04:30 ND ND 15

04:40 ND ND 12

04:50 ND ND 12

05:00 ND ND 13

05:10 ND ND 12

05:20 ND ND 12

05:30 ND ND 11

05:40 ND ND 11

05:50 ND ND 13

06:00 ND ND 13

06:10 ND ND 11

06:20 ND ND 14

06:30 ND ND 13

06:40 ND ND 14

06:50 ND ND 13

07:00 ND ND 12

07:10 ND ND 13

07:20 ND ND 12

07:30 ND ND 13

07:40 ND ND 16

07:50 ND ND 18

08:00 ND ND 21

08:10 ND ND 22

08:20 ND ND 22

08:30 ND ND 22

08:40 ND ND 21

08:50 ND ND 19

09:00 ND ND 17

09:10 ND ND 18

09:20 ND ND 19

09:30 ND ND 19

09:40 ND ND 17

09:50 ND ND 17

10:00 ND ND 17

10:10 ND ND 17

10:20 ND ND 15

10:30 ND ND 15

10:40 ND ND 16

10:50 ND ND 15

11:00 ND ND 18

11:10 ND ND 16

11:20 ND ND 18

11:30 ND ND 18

11:40 ND ND 17

11:50 ND ND 17

12:00 ND ND 14

12:10 ND ND 14

12:20 ND ND 12

12:30 ND ND 13

12:40 ND ND 14

12:50 ND ND 15

13:00 ND ND 14

13:10 ND ND 13

13:20 ND ND 17

13:30 ND ND 15

13:40 ND ND 15

13:50 ND ND 17

14:00 ND ND 15

14:10 ND ND 18

14:20 ND ND 15

14:30 ND ND 15

14:40 ND ND 15

14:50 ND ND 12

15:00 ND ND 14

15:10 ND ND 13

15:20 ND ND 12

15:30 ND ND 14

15:40 ND ND 16

15:50 ND ND 18

16:00 ND ND 17

16:10 ND ND 18

16:20 ND ND 20

16:30 ND ND 19

16:40 ND ND 17

16:50 ND ND 15

17:00 ND ND 15

17:10 ND ND 15

17:20 ND ND 14

17:30 ND ND 13

17:40 ND ND 12

17:50 ND ND 14

18:00 ND ND 14

18:10 ND ND 12

18:20 ND ND 10

18:30 ND ND 10

18:40 ND ND ND

18:50 ND ND 9.6

19:00 ND ND 10

19:10 ND ND 12

19:20 ND ND 14

19:30 ND ND 16

19:40 ND ND 18

19:50 ND ND 15

20:00 ND ND 14

20:10 ND ND 16

20:20 ND ND 16

20:30 ND ND 16

20:40 ND ND 17

20:50 ND ND 20

21:00 ND ND 19

21:10 ND ND 17

21:20 ND ND 15

21:30 ND ND 13

21:40 ND ND 12

21:50 ND ND 8.9

22:00 ND ND ND

22:10 ND ND 10

22:20 ND ND 9.6

22:30 ND ND 12

22:40 ND ND 12

22:50 ND ND 12

23:00 ND ND 15

23:10 ND ND 12

23:20 ND ND 15

23:30 ND ND 14

23:40 ND ND 15

23:50 ND ND 17

計測時刻	Cs137	Cs134	全β
00:00	ND	ND	12
00:10	ND	ND	14
00:20	ND	ND	13
00:30	ND	ND	14
00:40	ND	ND	17
00:50	ND	ND	15
01:00	ND	ND	16
01:10	ND	ND	15
01:20	ND	ND	17
01:30	ND	ND	18
01:40	ND	ND	16
01:50	ND	ND	15
02:00	ND	ND	12
02:10	ND	ND	12
02:20	ND	ND	11
02:30	ND	ND	8.5
02:40	ND	ND	10
02:50	ND	ND	9.7
03:00	ND	ND	12
03:10	ND	ND	10
03:20	ND	ND	9.0
03:30	ND	ND	10
03:40	ND	ND	11
03:50	ND	ND	13
04:00	ND	ND	10
04:10	ND	ND	14
04:20	ND	ND	14
04:30	ND	ND	15
04:40	ND	ND	12
04:50	ND	ND	12
05:00	ND	ND	13
05:10	ND	ND	12
05:20	ND	ND	12
05:30	ND	ND	11
05:40	ND	ND	11
05:50	ND	ND	13
06:00	ND	ND	13
06:10	ND	ND	11
06:20	ND	ND	14
06:30	ND	ND	13
06:40	ND	ND	14
06:50	ND	ND	13
07:00	ND	ND	12
07:10	ND	ND	13
07:20	ND	ND	12
07:30	ND	ND	13
07:40	ND	ND	16
07:50	ND	ND	18
08:00	ND	ND	21
08:10	ND	ND	22
08:20	ND	ND	22
08:30	ND	ND	22
08:40	ND	ND	21
08:50	ND	ND	19
09:00	ND	ND	17
09:10	ND	ND	18
09:20	ND	ND	19
09:30	ND	ND	19
09:40	ND	ND	17
09:50	ND	ND	17
10:00	ND	ND	17
10:10	ND	ND	17
10:20	ND	ND	15
10:30	ND	ND	15
10:40	ND	ND	16
10:50	ND	ND	15
11:00	ND	ND	18
11:10	ND	ND	16
11:20	ND	ND	18
11:30	ND	ND	18
11:40	ND	ND	17
11:50	ND	ND	17
12:00	ND	ND	14
12:10	ND	ND	14
12:20	ND	ND	12
12:30	ND	ND	13
12:40	ND	ND	14
12:50	ND	ND	15
13:00	ND	ND	14
13:10	ND	ND	13
13:20	ND	ND	17
13:30	ND	ND	15
13:40	ND	ND	15
13:50	ND	ND	17
14:00	ND	ND	15
14:10	ND	ND	18
14:20	ND	ND	15
14:30	ND	ND	15
14:40	ND	ND	15
14:50	ND	ND	12
15:00	ND	ND	14
15:10	ND	ND	13
15:20	ND	ND	12
15:30	ND	ND	14
15:40	ND	ND	16
15:50	ND	ND	18
16:00	ND	ND	17
16:10	ND	ND	18
16:20	ND	ND	20
16:30	ND	ND	19
16:40	ND	ND	17
16:50	ND	ND	15
17:00	ND	ND	15
17:10	ND	ND	15
17:20	ND	ND	14
17:30	ND	ND	13
17:40	ND	ND	12
17:50	ND	ND	14
18:00	ND	ND	14
18:10	ND	ND	12
18:20	ND	ND	10
18:30	ND	ND	10
18:40	ND	ND	ND
18:50	ND	ND	9.6
19:00	ND	ND	10
19:10	ND	ND	12
19:20	ND	ND	14
19:30	ND	ND	16
19:40	ND	ND	18
19:50	ND	ND	15
20:00	ND	ND	14
20:10	ND	ND	16
20:20	ND	ND	16
20:30	ND	ND	16
20:40	ND	ND	17
20:50	ND	ND	20
21:00	ND	ND	19
21:10	ND	ND	17
21:20	ND	ND	15
21:30	ND	ND	13
21:40	ND	ND	12
21:50	ND	ND	8.9
22:00	ND	ND	ND
22:10	ND	ND	10
22:20	ND	ND	9.6
22:30	ND	ND	12
22:40	ND	ND	12
22:50	ND	ND	12
23:00	ND	ND	15
23:10	ND	ND	12
23:20	ND	ND	15
23:30	ND	ND	14
23:40	ND	ND	15
23:50	ND	ND	17