Radiation Dose measured at exhaust stack monitor of Fukushima Daiichi Nuclear Power Station

○Information

○Measurement value list ： 2026/09/18(CSV Download)

Stack Unit：cps　Wind Velocity Unit：m/s

※"-": the wind velocity is below 0.5m/s

Time	Unit 5,6 joint stack	Wind Direction	Wind Velocity
00:00	3.6	north	3.4
00:10	3.5	north-northeast	3.7
00:20	3.6	north	3.2
00:30	3.5	north-northeast	4.8
00:40	3.5	north	4.4
00:50	3.4	north	5.5
01:00	3.6	north	4.6
01:10	3.6	north	5.4
01:20	3.4	north	5.8
01:30	3.4	north-northeast	7.0
01:40	3.6	north-northeast	5.3
01:50	3.6	north	5.7
02:00	3.6	north	6.0
02:10	3.6	north	5.3
02:20	3.5	north-northeast	5.6
02:30	3.5	north-northeast	5.1
02:40	3.6	north	5.5
02:50	3.4	north	5.5
03:00	3.5	north-northeast	7.1
03:10	3.6	north-northeast	6.4
03:20	3.7	north-northeast	6.8
03:30	3.5	north-northeast	4.9
03:40	3.6	north	4.9
03:50	3.4	north-northeast	4.5
04:00	3.6	north	4.5
04:10	3.6	north	4.7
04:20	3.6	north-northwest	4.7
04:30	3.5	north-northwest	4.4
04:40	3.5	north-northwest	4.9
04:50	3.5	north-northwest	5.3
05:00	3.5	north-northwest	5.6
05:10	3.5	north-northwest	6.2
05:20	3.4	north-northwest	6.2
05:30	3.5	north-northwest	5.8
05:40	3.6	north-northwest	7.2
05:50	3.5	north-northwest	6.4
06:00	3.5	north-northwest	5.7
06:10	3.5	north-northwest	5.8
06:20	3.5	north-northwest	6.2
06:30	3.5	north-northwest	5.1
06:40	3.7	north-northwest	4.9
06:50	3.5	north-northwest	5.5
07:00	3.6	north-northwest	4.3
07:10	3.6	north	4.5
07:20	3.6	north	4.8
07:30	3.6	north	4.8
07:40	3.6	north-northeast	7.7
07:50	3.6	north	7.0
08:00	3.6	north-northeast	8.3
08:10	3.5	north-northeast	8.1
08:20	3.5	north-northeast	7.5
08:30	3.5	north-northeast	7.3
08:40	3.4	north-northeast	5.6
08:50	3.6	north	7.2
09:00	3.6	north-northeast	7.7
09:10	3.6	north	6.8
09:20	3.6	north	7.3
09:30	3.6	north	6.4
09:40	3.5	north	5.0
09:50	3.5	north-northeast	4.8
10:00	3.6	north	6.3
10:10	3.6	north	6.7
10:20	3.6	north	6.7
10:30	3.4	north	8.4
10:40	3.4	north	4.3
10:50	3.6	north	6.4
11:00	3.6	north	6.4
11:10	3.5	north-northeast	6.3
11:20	3.5	north	5.8
11:30	3.6	north	6.0
11:40	3.6	north	6.9
11:50	3.6	north-northeast	6.5
12:00	3.6	north	8.4
12:10	3.7	north-northeast	7.7
12:20	3.7	north-northeast	8.6
12:30	3.5	north	7.2
12:40	3.6	north	6.5
12:50	3.6	north	6.9
13:00	3.7	north-northeast	8.9
13:10	3.6	north	6.6
13:20	3.5	north	5.6
13:30	3.3	north-northeast	5.7
13:40	3.5	north-northeast	5.4
13:50	3.5	north-northwest	5.4
14:00	3.5	north-northwest	4.3
14:10	3.5	north	5.5
14:20	3.6	north	6.3
14:30	3.4	north	6.0
14:40	3.6	north-northeast	7.4
14:50	3.7	north	6.8
15:00	3.6	north	6.4
15:10	3.5	north	6.4
15:20	3.6	north	7.2
15:30	3.5	north	5.5
15:40	3.6	north	5.7
15:50	3.5	north	6.5
16:00	3.5	north	6.6
16:10	3.6	north	6.6
16:20	3.6	north	6.3
16:30	3.5	north	6.1
16:40	3.6	north	6.0
16:50	3.5	north	5.9
17:00	3.5	north	6.6
17:10	3.5	north	5.7
17:20	3.5	north	5.6
17:30	3.6	north	4.7
17:40	3.5	north	4.7
17:50	3.5	north	5.2
18:00	3.4	north	5.3
18:10	3.4	north	5.9
18:20	3.5	north	4.9
18:30	3.6	north-northwest	5.9
18:40	3.6	north	5.7
18:50	3.6	north	4.8
19:00	3.4	north	5.7
19:10	3.6	north	5.4
19:20	3.5	north	6.1
19:30	3.5	north	5.9
19:40	3.5	north	6.0
19:50	3.6	north	5.5
20:00	3.5	north-northwest	6.1
20:10	3.5	north	5.3
20:20	3.6	north-northwest	5.7
20:30	3.5	north-northwest	5.4
20:40	3.6	north-northwest	5.2
20:50	3.6	north-northwest	5.2
21:00	3.5	north	4.8
21:10	3.5	north	4.4
21:20	3.4	north-northwest	4.9
21:30	3.6	north	5.3
21:40	3.5	north-northwest	4.8
21:50	3.6	north-northwest	4.5
22:00	3.6	north	5.1
22:10	3.7	north	4.5
22:20	3.7	north	3.7
22:30	3.7	north-northwest	4.8
22:40	3.8	north-northwest	4.4
22:50	3.5	north-northwest	5.0
23:00	3.5	north-northwest	4.5
23:10	3.6	north-northwest	5.3
23:20	3.6	north-northwest	5.5
23:30	3.6	north-northwest	4.9
23:40	3.7	northwest	4.3
23:50	3.5	north-northwest	5.9