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

○Information

○Measurement value list ： 2026/09/08(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	3.5	southwest	1.8
00:10	3.6	southwest	1.4
00:20	3.6	southwest	1.5
00:30	3.6	southwest	1.1
00:40	3.6	south	0.8
00:50	3.7	southeast	0.6
01:00	3.6	south-southeast	0.9
01:10	3.5	south-southwest	1.5
01:20	3.6	southwest	2.0
01:30	3.5	west-southwest	0.8
01:40	3.6	-	CALM
01:50	3.6	-	CALM
02:00	3.7	north	1.0
02:10	3.5	southwest	1.0
02:20	3.6	west-southwest	0.6
02:30	3.5	south-southwest	1.1
02:40	3.5	south-southwest	0.7
02:50	3.5	southwest	1.0
03:00	3.6	south-southeast	1.3
03:10	3.6	south	1.0
03:20	3.6	south-southwest	1.1
03:30	3.6	south	1.2
03:40	3.4	southwest	1.4
03:50	3.7	south-southwest	1.1
04:00	3.7	south	0.6
04:10	3.7	south	1.1
04:20	3.6	south	1.9
04:30	3.5	south	1.8
04:40	3.6	south-southwest	1.4
04:50	3.5	-	CALM
05:00	3.5	-	CALM
05:10	3.6	north-northeast	0.7
05:20	3.5	-	CALM
05:30	3.5	-	CALM
05:40	3.3	north-northeast	0.7
05:50	3.6	-	CALM
06:00	3.7	north	1.0
06:10	3.6	north	2.1
06:20	3.6	north	3.2
06:30	3.7	north-northwest	4.2
06:40	3.5	north-northwest	4.8
06:50	3.6	north-northwest	4.9
07:00	3.6	north-northwest	4.7
07:10	3.6	north-northwest	4.3
07:20	3.6	north-northwest	3.1
07:30	3.6	north	3.7
07:40	3.5	north	2.5
07:50	3.6	north-northwest	2.9
08:00	3.6	north-northwest	3.7
08:10	3.5	north	3.8
08:20	3.6	north	2.5
08:30	3.7	north	2.6
08:40	3.7	north	2.5
08:50	3.6	north	2.5
09:00	3.5	northwest	1.6
09:10	3.7	north-northwest	1.7
09:20	3.6	north	2.3
09:30	3.7	north	1.8
09:40	3.5	northeast	1.6
09:50	3.6	north-northeast	2.0
10:00	3.6	north-northeast	2.3
10:10	3.6	north-northeast	1.8
10:20	3.5	east-northeast	3.1
10:30	3.6	east-northeast	2.9
10:40	3.6	northeast	2.9
10:50	3.6	east-northeast	2.4
11:00	3.6	northeast	2.0
11:10	3.6	northeast	2.5
11:20	3.4	east-northeast	3.2
11:30	3.5	east-northeast	2.7
11:40	3.5	east-northeast	2.3
11:50	3.6	northeast	1.6
12:00	3.7	east-northeast	1.5
12:10	3.7	east	1.5
12:20	3.6	east	1.5
12:30	3.6	east	1.2
12:40	3.5	east-southeast	1.4
12:50	3.7	east-southeast	1.6
13:00	3.6	east-southeast	2.3
13:10	3.5	southeast	2.7
13:20	3.5	southeast	3.0
13:30	3.4	southeast	2.6
13:40	3.5	southeast	2.4
13:50	3.7	southeast	2.3
14:00	3.6	south-southeast	2.5
14:10	3.5	south-southeast	2.9
14:20	3.7	south-southeast	2.9
14:30	3.6	southeast	2.1
14:40	3.6	southeast	2.6
14:50	3.6	south-southeast	2.8
15:00	3.6	south-southeast	2.8
15:10	3.6	southeast	2.5
15:20	3.5	south-southeast	2.4
15:30	3.5	southeast	2.5
15:40	3.5	southeast	2.7
15:50	3.5	southeast	2.1
16:00	3.5	southeast	2.2
16:10	3.6	east-southeast	1.9
16:20	3.6	east-southeast	1.8
16:30	3.6	east-southeast	1.7
16:40	3.6	southeast	1.6
16:50	3.5	south-southeast	1.2
17:00	3.5	south-southeast	1.8
17:10	3.7	southeast	2.0
17:20	3.7	east-southeast	1.4
17:30	3.5	southeast	2.6
17:40	3.6	southeast	2.2
17:50	3.5	southeast	2.0
18:00	3.7	southeast	2.5
18:10	3.4	southeast	2.4
18:20	3.5	southeast	2.2
18:30	3.7	south-southeast	1.3
18:40	3.5	east-southeast	0.8
18:50	3.7	southeast	0.6
19:00	3.6	-	CALM
19:10	3.6	east-southeast	0.6
19:20	3.6	south-southeast	0.9
19:30	3.6	-	CALM
19:40	3.5	-	CALM
19:50	3.5	-	CALM
20:00	3.4	-	CALM
20:10	3.6	southeast	0.6
20:20	3.6	-	CALM
20:30	3.7	east-northeast	0.6
20:40	3.5	southeast	0.9
20:50	3.7	south-southeast	3.2
21:00	3.5	south-southeast	3.1
21:10	3.6	-	-
21:20	3.6	north-northeast	1.1
21:30	3.4	south	4.5
21:40	3.7	south-southeast	4.8
21:50	3.6	south-southeast	5.4
22:00	3.8	south-southeast	5.2
22:10	3.5	south-southeast	3.6
22:20	3.6	south-southeast	4.3
22:30	3.5	south-southeast	4.0
22:40	3.6	south-southeast	4.6
22:50	3.6	south-southeast	4.2
23:00	3.6	south-southeast	5.2
23:10	3.5	south	4.8
23:20	3.6	south	5.5
23:30	3.4	south	4.9
23:40	3.6	south	4.6
23:50	3.5	south	4.6