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）

○お知らせ

○計測値一覧：2026年05月18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 17

00:10 ND ND 17

00:20 ND ND 17

00:30 ND ND 17

00:40 ND ND 16

00:50 ND ND 17

01:00 ND ND 19

01:10 ND ND 18

01:20 ND ND 19

01:30 ND ND 18

01:40 ND ND 17

01:50 ND ND 17

02:00 ND ND 14

02:10 ND ND 15

02:20 ND ND 12

02:30 ND ND 13

02:40 ND ND 14

02:50 ND ND 14

03:00 ND ND 16

03:10 ND ND 16

03:20 ND ND 18

03:30 ND ND 16

03:40 ND ND 16

03:50 ND ND 16

04:00 ND ND 14

04:10 ND ND 15

04:20 ND ND 14

04:30 ND ND 18

04:40 ND ND 18

04:50 ND ND 16

05:00 ND ND 20

05:10 ND ND 20

05:20 ND ND 20

05:30 ND ND 18

05:40 ND ND 18

05:50 ND ND 23

06:00 ND ND 20

06:10 ND ND 18

06:20 ND ND 18

06:30 ND ND 15

06:40 ND ND 15

06:50 ND ND 10

07:00 ND ND 11

07:10 ND ND 10

07:20 ND ND 11

07:30 ND ND 14

07:40 ND ND 13

07:50 ND ND 15

08:00 ND ND 16

08:10 ND ND 16

08:20 ND ND 15

08:30 ND ND 14

08:40 ND ND 15

08:50 ND ND 13

09:00 ND ND 14

09:10 ND ND 14

09:20 ND ND 13

09:30 ND ND 12

09:40 ND ND 12

09:50 ND ND 12

10:00 ND ND 8.5

10:10 ND ND 9.0

10:20 ND ND 10

10:30 ND ND 10

10:40 ND ND 9.6

10:50 ND ND 9.2

11:00 ND ND 11

11:10 ND ND 11

11:20 ND ND 10

11:30 ND ND 10

11:40 ND ND ND

11:50 ND ND 10

12:00 ND ND 10

12:10 ND ND 13

12:20 ND ND 13

12:30 ND ND 13

12:40 ND ND 18

12:50 ND ND 17

13:00 ND ND 17

13:10 ND ND 13

13:20 ND ND 12

13:30 ND ND 8.6

13:40 ND ND ND

13:50 ND ND ND

14:00 ND ND ND

14:10 ND ND ND

14:20 ND ND 9.6

14:30 ND ND 12

14:40 ND ND 13

14:50 ND ND 17

15:00 ND ND 20

15:10 ND ND 21

15:20 ND ND 20

15:30 ND ND 23

15:40 ND ND 23

15:50 ND ND 21

16:00 ND ND 22

16:10 ND ND 19

16:20 ND ND 20

16:30 ND ND 17

16:40 ND ND 18

16:50 ND ND 16

17:00 ND ND 12

17:10 ND ND 14

17:20 ND ND 15

17:30 ND ND 18

17:40 ND ND 17

17:50 ND ND 18

18:00 ND ND 18

18:10 ND ND 17

18:20 ND ND 15

18:30 ND ND 12

18:40 ND ND 12

18:50 ND ND 12

19:00 ND ND 13

19:10 ND ND 14

19:20 ND ND 16

19:30 ND ND 21

19:40 ND ND 18

19:50 ND ND 18

20:00 ND ND 18

20:10 ND ND 18

20:20 ND ND 14

20:30 ND ND 12

20:40 ND ND 13

20:50 ND ND 14

21:00 ND ND 13

21:10 ND ND 12

21:20 ND ND 12

21:30 ND ND 12

21:40 ND ND 14

21:50 ND ND 13

22:00 ND ND 12

22:10 ND ND 13

22:20 ND ND 15

22:30 ND ND 16

22:40 ND ND 14

22:50 ND ND 17

23:00 ND ND 20

23:10 ND ND 21

23:20 ND ND 19

23:30 ND ND 21

23:40 ND ND 21

23:50 ND ND 19

計測時刻	Cs137	Cs134	全β
00:00	ND	ND	17
00:10	ND	ND	17
00:20	ND	ND	17
00:30	ND	ND	17
00:40	ND	ND	16
00:50	ND	ND	17
01:00	ND	ND	19
01:10	ND	ND	18
01:20	ND	ND	19
01:30	ND	ND	18
01:40	ND	ND	17
01:50	ND	ND	17
02:00	ND	ND	14
02:10	ND	ND	15
02:20	ND	ND	12
02:30	ND	ND	13
02:40	ND	ND	14
02:50	ND	ND	14
03:00	ND	ND	16
03:10	ND	ND	16
03:20	ND	ND	18
03:30	ND	ND	16
03:40	ND	ND	16
03:50	ND	ND	16
04:00	ND	ND	14
04:10	ND	ND	15
04:20	ND	ND	14
04:30	ND	ND	18
04:40	ND	ND	18
04:50	ND	ND	16
05:00	ND	ND	20
05:10	ND	ND	20
05:20	ND	ND	20
05:30	ND	ND	18
05:40	ND	ND	18
05:50	ND	ND	23
06:00	ND	ND	20
06:10	ND	ND	18
06:20	ND	ND	18
06:30	ND	ND	15
06:40	ND	ND	15
06:50	ND	ND	10
07:00	ND	ND	11
07:10	ND	ND	10
07:20	ND	ND	11
07:30	ND	ND	14
07:40	ND	ND	13
07:50	ND	ND	15
08:00	ND	ND	16
08:10	ND	ND	16
08:20	ND	ND	15
08:30	ND	ND	14
08:40	ND	ND	15
08:50	ND	ND	13
09:00	ND	ND	14
09:10	ND	ND	14
09:20	ND	ND	13
09:30	ND	ND	12
09:40	ND	ND	12
09:50	ND	ND	12
10:00	ND	ND	8.5
10:10	ND	ND	9.0
10:20	ND	ND	10
10:30	ND	ND	10
10:40	ND	ND	9.6
10:50	ND	ND	9.2
11:00	ND	ND	11
11:10	ND	ND	11
11:20	ND	ND	10
11:30	ND	ND	10
11:40	ND	ND	ND
11:50	ND	ND	10
12:00	ND	ND	10
12:10	ND	ND	13
12:20	ND	ND	13
12:30	ND	ND	13
12:40	ND	ND	18
12:50	ND	ND	17
13:00	ND	ND	17
13:10	ND	ND	13
13:20	ND	ND	12
13:30	ND	ND	8.6
13:40	ND	ND	ND
13:50	ND	ND	ND
14:00	ND	ND	ND
14:10	ND	ND	ND
14:20	ND	ND	9.6
14:30	ND	ND	12
14:40	ND	ND	13
14:50	ND	ND	17
15:00	ND	ND	20
15:10	ND	ND	21
15:20	ND	ND	20
15:30	ND	ND	23
15:40	ND	ND	23
15:50	ND	ND	21
16:00	ND	ND	22
16:10	ND	ND	19
16:20	ND	ND	20
16:30	ND	ND	17
16:40	ND	ND	18
16:50	ND	ND	16
17:00	ND	ND	12
17:10	ND	ND	14
17:20	ND	ND	15
17:30	ND	ND	18
17:40	ND	ND	17
17:50	ND	ND	18
18:00	ND	ND	18
18:10	ND	ND	17
18:20	ND	ND	15
18:30	ND	ND	12
18:40	ND	ND	12
18:50	ND	ND	12
19:00	ND	ND	13
19:10	ND	ND	14
19:20	ND	ND	16
19:30	ND	ND	21
19:40	ND	ND	18
19:50	ND	ND	18
20:00	ND	ND	18
20:10	ND	ND	18
20:20	ND	ND	14
20:30	ND	ND	12
20:40	ND	ND	13
20:50	ND	ND	14
21:00	ND	ND	13
21:10	ND	ND	12
21:20	ND	ND	12
21:30	ND	ND	12
21:40	ND	ND	14
21:50	ND	ND	13
22:00	ND	ND	12
22:10	ND	ND	13
22:20	ND	ND	15
22:30	ND	ND	16
22:40	ND	ND	14
22:50	ND	ND	17
23:00	ND	ND	20
23:10	ND	ND	21
23:20	ND	ND	19
23:30	ND	ND	21
23:40	ND	ND	21
23:50	ND	ND	19