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

○Information

○Measurement value list ： 2026/10/21(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	0.6
00:10	3.6	southwest	0.6
00:20	3.5	southwest	0.7
00:30	3.5	west-southwest	1.7
00:40	3.5	west-southwest	1.7
00:50	3.4	southwest	2.0
01:00	3.5	southwest	1.3
01:10	3.5	southwest	1.2
01:20	3.5	south-southwest	1.4
01:30	3.5	south-southwest	1.3
01:40	3.6	south-southwest	1.4
01:50	3.5	southwest	1.8
02:00	3.6	southwest	1.6
02:10	3.5	southwest	1.4
02:20	3.4	-	CALM
02:30	3.5	-	CALM
02:40	3.5	-	CALM
02:50	3.5	-	CALM
03:00	3.7	west-southwest	0.8
03:10	3.4	southwest	0.9
03:20	3.4	southwest	1.2
03:30	3.6	southwest	1.0
03:40	3.7	west	0.8
03:50	3.5	west	0.9
04:00	3.4	-	CALM
04:10	3.5	west-southwest	0.6
04:20	3.7	-	CALM
04:30	3.6	-	CALM
04:40	3.5	west	0.7
04:50	3.6	west	0.6
05:00	3.5	south-southeast	0.7
05:10	3.5	east-southeast	0.6
05:20	3.5	-	CALM
05:30	3.5	-	CALM
05:40	3.6	-	CALM
05:50	3.6	-	CALM
06:00	3.5	southwest	0.9
06:10	3.4	-	CALM
06:20	3.4	-	CALM
06:30	3.6	-	CALM
06:40	3.5	north-northeast	0.8
06:50	3.5	north-northeast	0.9
07:00	3.6	northeast	1.4
07:10	3.4	-	CALM
07:20	3.7	south	0.6
07:30	3.6	south-southwest	1.8
07:40	3.5	-	CALM
07:50	3.5	south-southwest	1.2
08:00	3.5	south	2.9
08:10	3.5	south	3.2
08:20	3.5	south-southeast	3.9
08:30	3.5	south	4.5
08:40	3.5	south-southwest	4.2
08:50	3.7	southwest	5.3
09:00	3.5	southwest	7.9
09:10	3.4	southwest	6.4
09:20	3.5	southwest	5.9
09:30	3.6	southwest	5.1
09:40	3.6	west-southwest	3.9
09:50	3.5	southwest	2.0
10:00	3.4	southwest	2.0
10:10	3.5	southwest	2.7
10:20	3.4	southwest	5.0
10:30	3.5	southwest	6.1
10:40	3.5	southwest	7.2
10:50	3.7	southwest	7.0
11:00	3.6	southwest	5.5
11:10	3.5	southwest	3.2
11:20	3.6	southwest	3.9
11:30	3.6	west-southwest	4.4
11:40	3.5	southwest	5.7
11:50	3.5	southwest	3.9
12:00	3.5	southwest	4.6
12:10	3.7	southwest	4.8
12:20	3.5	west-southwest	4.2
12:30	3.6	west-southwest	3.1
12:40	3.5	southwest	4.4
12:50	3.5	southwest	5.5
13:00	3.5	south-southwest	4.4
13:10	3.7	south-southwest	4.5
13:20	3.5	south-southwest	4.3
13:30	3.5	south-southwest	2.6
13:40	3.6	south	2.9
13:50	3.6	south	2.6
14:00	3.4	south	2.5
14:10	3.5	south	2.3
14:20	3.6	south	3.2
14:30	3.6	south-southeast	2.6
14:40	3.6	south-southeast	2.8
14:50	3.5	south-southeast	2.7
15:00	3.6	south-southeast	3.3
15:10	3.6	south-southwest	3.0
15:20	3.5	south	1.6
15:30	3.6	south-southwest	2.9
15:40	3.6	southwest	2.3
15:50	3.6	south-southwest	2.1
16:00	3.4	southwest	1.7
16:10	3.5	southwest	1.2
16:20	3.5	southwest	1.3
16:30	3.5	south-southwest	2.6
16:40	3.6	south-southwest	3.9
16:50	3.7	south-southwest	3.4
17:00	3.7	southwest	1.7
17:10	3.3	southwest	2.0
17:20	3.7	southwest	3.6
17:30	3.5	southwest	3.2
17:40	3.6	south-southwest	3.1
17:50	3.5	southwest	3.0
18:00	3.4	southwest	1.9
18:10	3.4	west-southwest	3.9
18:20	3.5	west-southwest	3.6
18:30	3.5	west-southwest	4.1
18:40	3.5	west-southwest	3.4
18:50	3.4	west	5.0
19:00	3.5	west	6.0
19:10	3.5	west	5.8
19:20	3.5	west	5.6
19:30	3.6	west	6.3
19:40	3.5	west	6.2
19:50	3.5	west	6.2
20:00	3.5	west	6.4
20:10	3.6	west-northwest	3.6
20:20	3.6	west	4.3
20:30	3.4	west-northwest	4.8
20:40	3.5	north-northwest	7.5
20:50	3.5	north-northwest	6.3
21:00	3.5	northwest	5.9
21:10	3.5	north-northwest	5.1
21:20	3.5	north-northwest	5.1
21:30	3.5	northwest	4.6
21:40	3.4	northwest	4.6
21:50	3.6	northwest	3.6
22:00	3.5	north-northwest	2.8
22:10	3.5	north-northwest	2.6
22:20	3.7	north-northeast	1.9
22:30	3.3	north-northeast	1.3
22:40	3.6	north-northeast	1.2
22:50	3.6	-	CALM
23:00	3.6	north-northwest	3.0
23:10	3.7	north-northwest	3.6
23:20	3.5	west-northwest	5.8
23:30	3.5	west-northwest	6.0
23:40	3.6	west	6.6
23:50	3.6	west-northwest	5.7