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04月01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 19

00:10 ND ND 18

00:20 ND ND 15

00:30 ND ND 14

00:40 ND ND 16

00:50 ND ND 13

01:00 ND ND 17

01:10 ND ND 21

01:20 ND ND 26

01:30 ND ND 23

01:40 ND ND 23

01:50 ND ND 24

02:00 ND ND 23

02:10 ND ND 19

02:20 ND ND 17

02:30 ND ND 20

02:40 ND ND 17

02:50 ND ND 17

03:00 ND ND 16

03:10 ND ND 18

03:20 ND ND 19

03:30 ND ND 18

03:40 ND ND 23

03:50 ND ND 24

04:00 ND ND 24

04:10 ND ND 26

04:20 ND ND 25

04:30 ND ND 23

04:40 ND ND 20

04:50 ND ND 19

05:00 ND ND 18

05:10 ND ND 18

05:20 ND ND 16

05:30 ND ND 20

05:40 ND ND 21

05:50 ND ND 21

06:00 ND ND 21

06:10 ND ND 20

06:20 ND ND 24

06:30 ND ND 23

06:40 ND ND 23

06:50 ND ND 21

07:00 ND ND 20

07:10 ND ND 20

07:20 ND ND 21

07:30 ND ND 20

07:40 ND ND 21

07:50 ND ND 20

08:00 ND ND 21

08:10 ND ND 17

08:20 ND ND 16

08:30 ND ND 16

08:40 ND ND 15

08:50 ND ND 15

09:00 ND ND 17

09:10 ND ND 20

09:20 ND ND 18

09:30 ND ND 18

09:40 ND ND 19

09:50 ND ND 19

10:00 ND ND 17

10:10 ND ND 17

10:20 - - -

10:30 - - -

10:40 - - -

10:50 - - -

11:00 - - -

11:10 - - -

11:20 - - -

11:30 - - -

11:40 ND ND 20

11:50 ND ND 18

12:00 ND ND 18

12:10 ND ND 18

12:20 ND ND 18

12:30 ND ND 18

12:40 ND ND 20

12:50 ND ND 20

13:00 ND ND 22

13:10 ND ND 23

13:20 ND ND 24

13:30 ND ND 23

13:40 ND ND 20

13:50 ND ND 21

14:00 ND ND 20

14:10 ND ND 20

14:20 ND ND 19

14:30 ND ND 17

14:40 ND ND 20

14:50 ND ND 19

15:00 ND ND 18

15:10 ND ND 19

15:20 ND ND 19

15:30 ND ND 20

15:40 ND ND 19

15:50 ND ND 21

16:00 ND ND 20

16:10 ND ND 18

16:20 ND ND 16

16:30 ND ND 14

16:40 ND ND 12

16:50 ND ND 9.7

17:00 ND ND 10

17:10 ND ND 10

17:20 ND ND 13

17:30 ND ND 14

17:40 ND ND 15

17:50 ND ND 15

18:00 ND ND 16

18:10 ND ND 17

18:20 ND ND 16

18:30 ND ND 18

18:40 ND ND 18

18:50 ND ND 20

19:00 ND ND 22

19:10 ND ND 23

19:20 ND ND 23

19:30 ND ND 20

19:40 ND ND 20

19:50 ND ND 20

20:00 ND ND 19

20:10 ND ND 17

20:20 ND ND 17

20:30 ND ND 19

20:40 ND ND 18

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 19

21:50 ND ND 17

22:00 ND ND 17

22:10 ND ND 17

22:20 ND ND 18

22:30 ND ND 20

22:40 ND ND 18

22:50 ND ND 21

23:00 ND ND 22

23:10 ND ND 21

23:20 ND ND 19

23:30 ND ND 19

23:40 ND ND 21

23:50 ND ND 22

計測時刻	Cs137	Cs134	全β
00:00	ND	ND	19
00:10	ND	ND	18
00:20	ND	ND	15
00:30	ND	ND	14
00:40	ND	ND	16
00:50	ND	ND	13
01:00	ND	ND	17
01:10	ND	ND	21
01:20	ND	ND	26
01:30	ND	ND	23
01:40	ND	ND	23
01:50	ND	ND	24
02:00	ND	ND	23
02:10	ND	ND	19
02:20	ND	ND	17
02:30	ND	ND	20
02:40	ND	ND	17
02:50	ND	ND	17
03:00	ND	ND	16
03:10	ND	ND	18
03:20	ND	ND	19
03:30	ND	ND	18
03:40	ND	ND	23
03:50	ND	ND	24
04:00	ND	ND	24
04:10	ND	ND	26
04:20	ND	ND	25
04:30	ND	ND	23
04:40	ND	ND	20
04:50	ND	ND	19
05:00	ND	ND	18
05:10	ND	ND	18
05:20	ND	ND	16
05:30	ND	ND	20
05:40	ND	ND	21
05:50	ND	ND	21
06:00	ND	ND	21
06:10	ND	ND	20
06:20	ND	ND	24
06:30	ND	ND	23
06:40	ND	ND	23
06:50	ND	ND	21
07:00	ND	ND	20
07:10	ND	ND	20
07:20	ND	ND	21
07:30	ND	ND	20
07:40	ND	ND	21
07:50	ND	ND	20
08:00	ND	ND	21
08:10	ND	ND	17
08:20	ND	ND	16
08:30	ND	ND	16
08:40	ND	ND	15
08:50	ND	ND	15
09:00	ND	ND	17
09:10	ND	ND	20
09:20	ND	ND	18
09:30	ND	ND	18
09:40	ND	ND	19
09:50	ND	ND	19
10:00	ND	ND	17
10:10	ND	ND	17
10:20	-	-	-
10:30	-	-	-
10:40	-	-	-
10:50	-	-	-
11:00	-	-	-
11:10	-	-	-
11:20	-	-	-
11:30	-	-	-
11:40	ND	ND	20
11:50	ND	ND	18
12:00	ND	ND	18
12:10	ND	ND	18
12:20	ND	ND	18
12:30	ND	ND	18
12:40	ND	ND	20
12:50	ND	ND	20
13:00	ND	ND	22
13:10	ND	ND	23
13:20	ND	ND	24
13:30	ND	ND	23
13:40	ND	ND	20
13:50	ND	ND	21
14:00	ND	ND	20
14:10	ND	ND	20
14:20	ND	ND	19
14:30	ND	ND	17
14:40	ND	ND	20
14:50	ND	ND	19
15:00	ND	ND	18
15:10	ND	ND	19
15:20	ND	ND	19
15:30	ND	ND	20
15:40	ND	ND	19
15:50	ND	ND	21
16:00	ND	ND	20
16:10	ND	ND	18
16:20	ND	ND	16
16:30	ND	ND	14
16:40	ND	ND	12
16:50	ND	ND	9.7
17:00	ND	ND	10
17:10	ND	ND	10
17:20	ND	ND	13
17:30	ND	ND	14
17:40	ND	ND	15
17:50	ND	ND	15
18:00	ND	ND	16
18:10	ND	ND	17
18:20	ND	ND	16
18:30	ND	ND	18
18:40	ND	ND	18
18:50	ND	ND	20
19:00	ND	ND	22
19:10	ND	ND	23
19:20	ND	ND	23
19:30	ND	ND	20
19:40	ND	ND	20
19:50	ND	ND	20
20:00	ND	ND	19
20:10	ND	ND	17
20:20	ND	ND	17
20:30	ND	ND	19
20:40	ND	ND	18
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	19
21:50	ND	ND	17
22:00	ND	ND	17
22:10	ND	ND	17
22:20	ND	ND	18
22:30	ND	ND	20
22:40	ND	ND	18
22:50	ND	ND	21
23:00	ND	ND	22
23:10	ND	ND	21
23:20	ND	ND	19
23:30	ND	ND	19
23:40	ND	ND	21
23:50	ND	ND	22