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

○Information

○Measurement value list ： 2026/08/11(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	5.6
00:10	3.8	north	5.4
00:20	3.7	north	5.2
00:30	3.7	north-northwest	5.3
00:40	3.5	north-northwest	4.1
00:50	3.6	north-northwest	5.1
01:00	3.5	north-northwest	5.5
01:10	3.6	northwest	3.8
01:20	3.7	northwest	4.3
01:30	3.5	northwest	4.7
01:40	3.8	northwest	4.9
01:50	3.5	northwest	5.3
02:00	3.5	northwest	5.5
02:10	3.5	north-northwest	5.8
02:20	3.5	north-northwest	6.1
02:30	3.8	northwest	6.8
02:40	3.6	northwest	5.7
02:50	3.6	northwest	6.7
03:00	3.4	northwest	7.1
03:10	3.7	northwest	6.9
03:20	3.5	northwest	6.5
03:30	3.5	north-northwest	7.5
03:40	3.6	north-northwest	8.5
03:50	3.6	north-northwest	8.6
04:00	3.5	north-northwest	8.6
04:10	3.6	north-northwest	7.1
04:20	3.4	northwest	8.3
04:30	3.6	northwest	8.0
04:40	3.5	northwest	8.1
04:50	3.5	northwest	8.5
05:00	3.4	northwest	8.6
05:10	3.5	northwest	8.4
05:20	3.5	north-northwest	8.7
05:30	3.6	north-northwest	8.7
05:40	3.4	northwest	8.5
05:50	3.5	northwest	8.2
06:00	3.7	northwest	8.8
06:10	3.4	northwest	8.0
06:20	3.5	north-northwest	9.4
06:30	3.5	north-northwest	8.3
06:40	3.5	northwest	8.6
06:50	3.5	northwest	8.6
07:00	3.6	northwest	9.0
07:10	3.6	northwest	8.2
07:20	3.5	northwest	8.4
07:30	3.5	northwest	8.4
07:40	3.6	northwest	8.5
07:50	3.6	northwest	8.2
08:00	3.5	northwest	8.6
08:10	3.7	northwest	9.3
08:20	3.4	northwest	9.0
08:30	3.5	northwest	8.6
08:40	3.5	northwest	10.7
08:50	3.5	northwest	9.3
09:00	3.6	northwest	10.8
09:10	3.5	northwest	9.7
09:20	3.7	northwest	10.0
09:30	3.5	northwest	10.4
09:40	3.6	northwest	11.0
09:50	3.5	northwest	8.2
10:00	3.5	northwest	12.2
10:10	3.7	northwest	12.8
10:20	3.6	northwest	10.5
10:30	3.5	northwest	11.8
10:40	3.7	northwest	7.9
10:50	3.5	northwest	10.2
11:00	3.6	northwest	9.9
11:10	3.6	northwest	10.4
11:20	3.5	northwest	10.2
11:30	3.5	west-northwest	6.4
11:40	3.6	northwest	10.3
11:50	3.4	northwest	11.3
12:00	3.6	northwest	11.8
12:10	3.6	northwest	9.0
12:20	3.6	-	-
12:30	3.6	north-northwest	10.5
12:40	3.7	northwest	6.5
12:50	3.5	northwest	8.3
13:00	3.4	north-northwest	6.9
13:10	3.7	-	-
13:20	3.6	north	10.0
13:30	3.6	-	-
13:40	3.7	north-northwest	7.2
13:50	3.6	north-northwest	4.1
14:00	3.5	-	-
14:10	3.6	-	-
14:20	3.6	-	-
14:30	3.5	-	-
14:40	3.6	-	-
14:50	3.6	north	7.5
15:00	3.5	-	-
15:10	3.6	-	-
15:20	3.8	north	11.1
15:30	3.6	-	-
15:40	3.6	-	-
15:50	3.5	north-northeast	12.1
16:00	3.5	-	-
16:10	3.7	north-northeast	9.9
16:20	3.6	north-northeast	12.9
16:30	3.4	northeast	12.3
16:40	3.4	-	-
16:50	3.4	north-northeast	11.1
17:00	3.6	northeast	13.2
17:10	3.5	northeast	13.7
17:20	3.6	northeast	12.5
17:30	3.5	northeast	14.7
17:40	3.5	north-northeast	13.6
17:50	3.6	northeast	11.8
18:00	3.6	northeast	11.5
18:10	3.5	northeast	12.1
18:20	3.6	northeast	12.0
18:30	3.7	northeast	12.3
18:40	3.7	northeast	12.8
18:50	3.4	northeast	12.2
19:00	3.5	northeast	11.9
19:10	3.6	northeast	12.2
19:20	3.6	northeast	10.6
19:30	3.4	northeast	11.7
19:40	3.5	northeast	10.6
19:50	3.6	northeast	12.0
20:00	3.4	northeast	10.1
20:10	3.7	east-northeast	9.6
20:20	3.6	east-northeast	12.1
20:30	3.5	east-northeast	10.9
20:40	3.4	east-northeast	11.5
20:50	3.6	east-northeast	9.1
21:00	3.5	east-northeast	9.3
21:10	3.4	east-northeast	9.1
21:20	3.4	east-northeast	9.5
21:30	3.5	east	8.2
21:40	3.6	east	8.4
21:50	3.7	east	9.7
22:00	3.6	east	9.2
22:10	3.3	east	9.0
22:20	3.6	east	8.9
22:30	3.6	east	9.8
22:40	3.6	east	9.0
22:50	3.6	east	9.4
23:00	3.6	east-southeast	8.1
23:10	3.6	east-southeast	8.0
23:20	3.7	east-southeast	6.9
23:30	3.5	east-southeast	6.9
23:40	3.4	east-southeast	6.4
23:50	3.5	east-southeast	6.8