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03月31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 21

00:10 ND ND 20

00:20 ND ND 19

00:30 ND ND 18

00:40 ND ND 17

00:50 ND ND 17

01:00 ND ND 16

01:10 ND ND 17

01:20 ND ND 16

01:30 ND ND 18

01:40 ND ND 17

01:50 ND ND 18

02:00 ND ND 18

02:10 ND ND 19

02:20 ND ND 19

02:30 ND ND 18

02:40 ND ND 21

02:50 ND ND 19

03:00 ND ND 20

03:10 ND ND 18

03:20 ND ND 20

03:30 ND ND 18

03:40 ND ND 20

03:50 ND ND 19

04:00 ND ND 16

04:10 ND ND 17

04:20 ND ND 16

04:30 ND ND 18

04:40 ND ND 14

04:50 ND ND 11

05:00 ND ND 13

05:10 ND ND 11

05:20 ND ND 10

05:30 ND ND 9.6

05:40 ND ND 11

05:50 ND ND 14

06:00 ND ND 16

06:10 ND ND 17

06:20 ND ND 19

06:30 ND ND 18

06:40 ND ND 19

06:50 ND ND 20

07:00 ND ND 18

07:10 ND ND 19

07:20 ND ND 18

07:30 ND ND 18

07:40 ND ND 18

07:50 ND ND 16

08:00 ND ND 14

08:10 ND ND 15

08:20 ND ND 16

08:30 ND ND 14

08:40 ND ND 14

08:50 ND ND 14

09:00 ND ND 15

09:10 ND ND 14

09:20 ND ND 16

09:30 ND ND 16

09:40 ND ND 16

09:50 ND ND 18

10:00 ND ND 18

10:10 ND ND 18

10:20 ND ND 18

10:30 ND ND 16

10:40 ND ND 17

10:50 ND ND 17

11:00 ND ND 17

11:10 ND ND 16

11:20 ND ND 16

11:30 ND ND 19

11:40 ND ND 20

11:50 ND ND 21

12:00 ND ND 23

12:10 ND ND 24

12:20 ND ND 22

12:30 ND ND 23

12:40 ND ND 22

12:50 ND ND 22

13:00 ND ND 21

13:10 ND ND 19

13:20 ND ND 21

13:30 ND ND 19

13:40 ND ND 20

13:50 ND ND 21

14:00 ND ND 21

14:10 ND ND 25

14:20 ND ND 23

14:30 ND ND 23

14:40 ND ND 22

14:50 ND ND 19

15:00 ND ND 20

15:10 ND ND 15

15:20 ND ND 14

15:30 ND ND 15

15:40 ND ND 16

15:50 ND ND 18

16:00 ND ND 18

16:10 ND ND 22

16:20 ND ND 22

16:30 ND ND 20

16:40 ND ND 20

16:50 ND ND 22

17:00 ND ND 21

17:10 ND ND 18

17:20 ND ND 18

17:30 ND ND 20

17:40 ND ND 18

17:50 ND ND 16

18:00 ND ND 17

18:10 ND ND 19

18:20 ND ND 19

18:30 ND ND 23

18:40 ND ND 24

18:50 ND ND 22

19:00 ND ND 23

19:10 ND ND 23

19:20 ND ND 22

19:30 ND ND 20

19:40 ND ND 20

19:50 ND ND 22

20:00 ND ND 23

20:10 ND ND 19

20:20 ND ND 22

20:30 ND ND 23

20:40 ND ND 24

20:50 ND ND 24

21:00 ND ND 22

21:10 ND ND 26

21:20 ND ND 25

21:30 ND ND 23

21:40 ND ND 21

21:50 ND ND 19

22:00 ND ND 21

22:10 ND ND 20

22:20 ND ND 21

22:30 ND ND 19

22:40 ND ND 20

22:50 ND ND 19

23:00 ND ND 17

23:10 ND ND 16

23:20 ND ND 16

23:30 ND ND 17

23:40 ND ND 17

23:50 ND ND 20

計測時刻	Cs137	Cs134	全β
00:00	ND	ND	21
00:10	ND	ND	20
00:20	ND	ND	19
00:30	ND	ND	18
00:40	ND	ND	17
00:50	ND	ND	17
01:00	ND	ND	16
01:10	ND	ND	17
01:20	ND	ND	16
01:30	ND	ND	18
01:40	ND	ND	17
01:50	ND	ND	18
02:00	ND	ND	18
02:10	ND	ND	19
02:20	ND	ND	19
02:30	ND	ND	18
02:40	ND	ND	21
02:50	ND	ND	19
03:00	ND	ND	20
03:10	ND	ND	18
03:20	ND	ND	20
03:30	ND	ND	18
03:40	ND	ND	20
03:50	ND	ND	19
04:00	ND	ND	16
04:10	ND	ND	17
04:20	ND	ND	16
04:30	ND	ND	18
04:40	ND	ND	14
04:50	ND	ND	11
05:00	ND	ND	13
05:10	ND	ND	11
05:20	ND	ND	10
05:30	ND	ND	9.6
05:40	ND	ND	11
05:50	ND	ND	14
06:00	ND	ND	16
06:10	ND	ND	17
06:20	ND	ND	19
06:30	ND	ND	18
06:40	ND	ND	19
06:50	ND	ND	20
07:00	ND	ND	18
07:10	ND	ND	19
07:20	ND	ND	18
07:30	ND	ND	18
07:40	ND	ND	18
07:50	ND	ND	16
08:00	ND	ND	14
08:10	ND	ND	15
08:20	ND	ND	16
08:30	ND	ND	14
08:40	ND	ND	14
08:50	ND	ND	14
09:00	ND	ND	15
09:10	ND	ND	14
09:20	ND	ND	16
09:30	ND	ND	16
09:40	ND	ND	16
09:50	ND	ND	18
10:00	ND	ND	18
10:10	ND	ND	18
10:20	ND	ND	18
10:30	ND	ND	16
10:40	ND	ND	17
10:50	ND	ND	17
11:00	ND	ND	17
11:10	ND	ND	16
11:20	ND	ND	16
11:30	ND	ND	19
11:40	ND	ND	20
11:50	ND	ND	21
12:00	ND	ND	23
12:10	ND	ND	24
12:20	ND	ND	22
12:30	ND	ND	23
12:40	ND	ND	22
12:50	ND	ND	22
13:00	ND	ND	21
13:10	ND	ND	19
13:20	ND	ND	21
13:30	ND	ND	19
13:40	ND	ND	20
13:50	ND	ND	21
14:00	ND	ND	21
14:10	ND	ND	25
14:20	ND	ND	23
14:30	ND	ND	23
14:40	ND	ND	22
14:50	ND	ND	19
15:00	ND	ND	20
15:10	ND	ND	15
15:20	ND	ND	14
15:30	ND	ND	15
15:40	ND	ND	16
15:50	ND	ND	18
16:00	ND	ND	18
16:10	ND	ND	22
16:20	ND	ND	22
16:30	ND	ND	20
16:40	ND	ND	20
16:50	ND	ND	22
17:00	ND	ND	21
17:10	ND	ND	18
17:20	ND	ND	18
17:30	ND	ND	20
17:40	ND	ND	18
17:50	ND	ND	16
18:00	ND	ND	17
18:10	ND	ND	19
18:20	ND	ND	19
18:30	ND	ND	23
18:40	ND	ND	24
18:50	ND	ND	22
19:00	ND	ND	23
19:10	ND	ND	23
19:20	ND	ND	22
19:30	ND	ND	20
19:40	ND	ND	20
19:50	ND	ND	22
20:00	ND	ND	23
20:10	ND	ND	19
20:20	ND	ND	22
20:30	ND	ND	23
20:40	ND	ND	24
20:50	ND	ND	24
21:00	ND	ND	22
21:10	ND	ND	26
21:20	ND	ND	25
21:30	ND	ND	23
21:40	ND	ND	21
21:50	ND	ND	19
22:00	ND	ND	21
22:10	ND	ND	20
22:20	ND	ND	21
22:30	ND	ND	19
22:40	ND	ND	20
22:50	ND	ND	19
23:00	ND	ND	17
23:10	ND	ND	16
23:20	ND	ND	16
23:30	ND	ND	17
23:40	ND	ND	17
23:50	ND	ND	20