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

○Information

○Measurement value list ： 2026/08/22(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-northwest	3.2
00:10	3.6	north-northwest	2.7
00:20	3.4	north-northwest	2.8
00:30	3.4	north-northwest	2.7
00:40	3.6	north-northwest	2.7
00:50	3.6	north-northwest	2.5
01:00	3.4	north	2.4
01:10	3.5	north	1.0
01:20	3.5	north-northwest	2.0
01:30	3.4	north-northwest	2.3
01:40	3.5	north	1.9
01:50	3.4	north-northeast	1.7
02:00	3.6	north	2.3
02:10	3.6	north	2.6
02:20	3.6	north	2.4
02:30	3.7	north	2.2
02:40	3.7	north-northwest	1.5
02:50	3.5	northwest	1.2
03:00	3.5	north-northwest	0.8
03:10	3.7	north-northwest	1.2
03:20	3.5	north-northwest	1.3
03:30	3.5	northwest	1.1
03:40	3.5	north	0.8
03:50	3.6	north-northeast	0.9
04:00	3.4	north	0.8
04:10	3.5	north-northwest	0.6
04:20	3.7	-	CALM
04:30	3.6	-	CALM
04:40	3.5	east-northeast	1.0
04:50	3.5	east-northeast	0.8
05:00	3.5	-	CALM
05:10	3.5	east-northeast	0.7
05:20	3.6	-	CALM
05:30	3.3	-	CALM
05:40	3.5	-	CALM
05:50	3.5	-	CALM
06:00	3.5	-	CALM
06:10	3.6	-	CALM
06:20	3.7	-	CALM
06:30	3.6	west-southwest	1.0
06:40	3.6	west	1.0
06:50	3.6	west	0.8
07:00	3.6	-	CALM
07:10	3.6	-	CALM
07:20	3.5	west	0.8
07:30	3.5	west-northwest	0.6
07:40	3.5	northwest	1.5
07:50	3.6	west-northwest	2.0
08:00	3.5	west-northwest	1.9
08:10	3.6	west-northwest	1.5
08:20	3.7	west-northwest	1.0
08:30	3.5	west	1.0
08:40	3.7	southwest	1.0
08:50	3.7	southwest	0.7
09:00	3.5	north-northwest	0.8
09:10	3.5	west-northwest	0.7
09:20	3.6	west-northwest	1.0
09:30	3.7	west-southwest	1.0
09:40	3.5	west-northwest	0.8
09:50	3.5	northeast	1.5
10:00	3.8	north-northeast	3.3
10:10	3.5	north-northeast	2.4
10:20	3.6	northeast	2.4
10:30	3.6	northeast	3.1
10:40	3.6	northeast	2.7
10:50	3.5	northeast	2.0
11:00	3.6	northeast	2.9
11:10	3.5	north-northeast	3.1
11:20	3.5	north-northeast	4.1
11:30	3.4	northeast	3.7
11:40	3.5	north-northeast	2.8
11:50	3.6	north-northeast	2.3
12:00	3.5	north-northeast	3.1
12:10	3.5	north-northeast	3.6
12:20	3.6	northeast	3.2
12:30	3.6	northeast	2.7
12:40	3.6	northeast	2.9
12:50	3.7	east-northeast	3.1
13:00	3.5	northeast	3.3
13:10	3.5	east-northeast	3.5
13:20	3.7	northeast	3.3
13:30	3.6	northeast	3.1
13:40	3.6	east-northeast	3.2
13:50	3.6	northeast	3.1
14:00	3.5	east	3.1
14:10	3.5	east-northeast	3.4
14:20	3.7	east	4.1
14:30	3.6	northeast	3.8
14:40	3.6	northeast	3.1
14:50	3.6	east-northeast	2.5
15:00	3.4	northeast	2.7
15:10	3.6	northeast	3.1
15:20	3.7	east-northeast	2.8
15:30	3.5	east	2.6
15:40	3.6	east-northeast	2.5
15:50	3.6	east	1.9
16:00	3.5	east	1.3
16:10	3.5	east-northeast	1.6
16:20	3.6	east	2.1
16:30	3.5	east-southeast	1.2
16:40	3.6	east-northeast	1.6
16:50	3.5	east-southeast	1.6
17:00	3.6	east-southeast	1.2
17:10	3.7	east	1.4
17:20	3.5	northeast	1.3
17:30	3.3	east-northeast	1.2
17:40	3.6	north-northeast	0.6
17:50	3.5	east-northeast	1.0
18:00	3.4	east	1.0
18:10	3.3	east-southeast	0.9
18:20	3.6	-	CALM
18:30	3.3	-	CALM
18:40	3.5	east-southeast	0.6
18:50	3.6	-	CALM
19:00	3.6	east-southeast	0.9
19:10	3.5	east-southeast	0.9
19:20	3.5	east	1.0
19:30	3.7	-	CALM
19:40	3.5	-	CALM
19:50	3.5	south	0.8
20:00	3.5	south-southwest	1.2
20:10	3.3	-	-
20:20	3.6	-	-
20:30	3.5	-	CALM
20:40	3.5	-	CALM
20:50	3.7	east	1.1
21:00	3.4	east	0.7
21:10	3.6	-	CALM
21:20	3.5	-	CALM
21:30	3.6	-	CALM
21:40	3.5	-	CALM
21:50	3.5	-	CALM
22:00	3.6	south	0.7
22:10	3.4	south-southwest	1.1
22:20	3.6	south-southwest	1.0
22:30	3.5	south-southwest	1.5
22:40	3.4	southwest	1.8
22:50	3.5	south-southwest	0.7
23:00	3.7	-	-
23:10	3.6	south-southwest	1.7
23:20	3.4	southwest	1.1
23:30	3.5	south-southwest	0.8
23:40	3.6	southwest	1.4
23:50	3.7	-	CALM