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

○Information

○Measurement value list ： 2026/10/20(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	south-southwest	5.5
00:10	3.6	south-southwest	5.8
00:20	3.4	south-southwest	4.2
00:30	3.6	south-southwest	3.3
00:40	3.5	south-southwest	4.0
00:50	3.5	south-southwest	4.6
01:00	3.4	south-southwest	5.5
01:10	3.4	south-southwest	5.1
01:20	3.5	southwest	4.1
01:30	3.4	south-southwest	4.0
01:40	3.3	south-southwest	3.7
01:50	3.4	south-southwest	3.1
02:00	3.5	south-southwest	2.4
02:10	3.5	south-southwest	2.5
02:20	3.7	south-southwest	2.7
02:30	3.5	south-southwest	2.5
02:40	3.4	southwest	2.9
02:50	3.6	southwest	2.3
03:00	3.4	southwest	1.9
03:10	3.4	southwest	2.9
03:20	3.4	southwest	2.1
03:30	3.7	south	2.3
03:40	3.5	south	2.5
03:50	3.4	south-southwest	2.6
04:00	3.5	south	2.8
04:10	3.6	south-southeast	1.9
04:20	3.5	south-southeast	1.7
04:30	3.5	south-southeast	1.8
04:40	3.5	south-southwest	1.9
04:50	3.4	south-southwest	1.4
05:00	3.5	south-southwest	2.4
05:10	3.6	south-southwest	2.4
05:20	3.5	southwest	2.6
05:30	3.4	southwest	3.2
05:40	3.4	south-southwest	3.6
05:50	3.4	southwest	3.1
06:00	3.5	southwest	2.1
06:10	3.7	west-northwest	1.2
06:20	3.5	north-northwest	1.5
06:30	3.3	northeast	2.2
06:40	3.6	east-northeast	2.5
06:50	3.5	east-northeast	1.3
07:00	3.5	north-northeast	0.9
07:10	3.4	north	1.9
07:20	3.6	north-northwest	2.0
07:30	3.6	northwest	1.7
07:40	3.5	northwest	1.8
07:50	3.6	northwest	2.4
08:00	3.6	north-northwest	3.7
08:10	3.5	north-northwest	3.5
08:20	3.6	north-northwest	1.0
08:30	3.5	north-northwest	1.9
08:40	3.4	north	5.6
08:50	3.5	north	6.1
09:00	3.5	north	3.7
09:10	3.4	north-northwest	3.2
09:20	3.6	north-northwest	1.7
09:30	3.4	north	2.6
09:40	3.6	north-northwest	2.4
09:50	3.5	north	3.7
10:00	3.6	north-northwest	2.4
10:10	3.5	north-northwest	2.6
10:20	3.6	north	2.1
10:30	3.5	north-northeast	2.9
10:40	3.6	north	2.4
10:50	3.5	north-northeast	2.7
11:00	3.5	north	1.9
11:10	3.4	north-northwest	2.9
11:20	3.4	-	-
11:30	3.5	north	4.5
11:40	3.4	north-northwest	2.8
11:50	3.5	north-northwest	3.0
12:00	3.5	northwest	2.8
12:10	3.6	northwest	2.6
12:20	3.4	northwest	3.2
12:30	3.5	northwest	2.8
12:40	3.4	northwest	3.1
12:50	3.5	northwest	2.3
13:00	3.5	north-northwest	3.9
13:10	3.5	northwest	3.7
13:20	3.4	northwest	3.0
13:30	3.4	northwest	4.0
13:40	3.5	north-northwest	3.5
13:50	3.6	north-northwest	2.0
14:00	3.5	north-northwest	1.6
14:10	3.6	north-northwest	1.7
14:20	3.5	north	1.2
14:30	3.4	north-northwest	0.8
14:40	3.7	north-northwest	1.0
14:50	3.4	north-northwest	0.9
15:00	3.3	-	CALM
15:10	3.5	-	CALM
15:20	3.5	-	CALM
15:30	3.4	north-northwest	0.8
15:40	3.4	north	0.6
15:50	3.5	north-northeast	0.7
16:00	3.5	north-northeast	0.6
16:10	3.3	north-northeast	0.8
16:20	3.6	northeast	1.0
16:30	3.5	-	CALM
16:40	3.5	-	CALM
16:50	3.5	north-northwest	0.6
17:00	3.4	-	CALM
17:10	3.5	north	0.8
17:20	3.4	north	0.9
17:30	3.4	north	1.1
17:40	3.6	north	1.7
17:50	3.4	north	2.2
18:00	3.7	north-northwest	2.0
18:10	3.5	northwest	1.0
18:20	3.4	north	1.1
18:30	3.5	north	1.8
18:40	3.5	north-northwest	1.1
18:50	3.4	northwest	0.9
19:00	3.5	northwest	0.8
19:10	3.5	-	CALM
19:20	3.4	west-northwest	0.7
19:30	3.5	west	0.9
19:40	3.4	west-northwest	0.6
19:50	3.5	west	0.7
20:00	3.6	west	0.8
20:10	3.3	west	0.7
20:20	3.6	-	CALM
20:30	3.4	west	0.8
20:40	3.5	west	0.8
20:50	3.4	-	CALM
21:00	3.5	-	CALM
21:10	3.5	-	CALM
21:20	3.4	-	CALM
21:30	3.6	-	CALM
21:40	3.5	west-southwest	0.8
21:50	3.5	west-southwest	1.1
22:00	3.4	west-southwest	0.9
22:10	3.6	-	CALM
22:20	3.5	south	0.8
22:30	3.4	east-southeast	0.6
22:40	3.5	east	0.6
22:50	3.4	east-southeast	0.7
23:00	3.6	-	CALM
23:10	3.5	-	CALM
23:20	3.5	southwest	0.7
23:30	3.5	-	CALM
23:40	3.4	-	CALM
23:50	3.6	-	CALM