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

○Information

○Measurement value list ： 2026/08/25(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	3.4	northeast	1.1
00:10	3.6	northeast	1.5
00:20	3.5	north-northeast	1.4
00:30	3.5	east-northeast	0.9
00:40	3.8	north-northeast	0.8
00:50	3.5	east-northeast	1.1
01:00	3.5	-	CALM
01:10	3.5	-	CALM
01:20	3.4	-	CALM
01:30	3.4	-	CALM
01:40	3.6	northwest	0.7
01:50	3.6	-	CALM
02:00	3.5	-	CALM
02:10	3.4	-	CALM
02:20	3.6	-	CALM
02:30	3.5	-	CALM
02:40	3.6	north-northeast	1.0
02:50	3.5	northeast	0.8
03:00	3.4	east	0.9
03:10	3.8	southeast	0.8
03:20	3.5	southeast	0.6
03:30	3.5	east-southeast	0.6
03:40	3.6	south-southeast	0.9
03:50	3.6	south	0.6
04:00	3.6	-	CALM
04:10	3.5	south-southeast	0.7
04:20	3.5	southeast	0.6
04:30	3.6	-	CALM
04:40	3.6	south-southwest	0.7
04:50	3.8	south-southeast	0.8
05:00	3.6	south-southeast	0.6
05:10	3.4	south	0.7
05:20	3.6	south	1.2
05:30	3.6	south-southeast	1.3
05:40	3.6	south-southeast	1.2
05:50	3.7	south	1.4
06:00	3.5	south	1.6
06:10	3.5	south-southwest	1.9
06:20	3.6	south-southwest	1.3
06:30	3.5	south-southwest	1.1
06:40	3.6	south-southwest	1.4
06:50	3.5	southwest	1.2
07:00	3.6	west-southwest	1.7
07:10	3.7	southwest	1.7
07:20	3.7	southwest	1.1
07:30	3.6	west	0.7
07:40	3.5	west-southwest	0.8
07:50	3.5	southwest	0.7
08:00	3.4	-	CALM
08:10	3.5	southeast	1.0
08:20	3.6	southeast	0.7
08:30	3.5	south-southeast	1.0
08:40	3.6	south-southeast	1.5
08:50	3.7	south-southeast	2.3
09:00	3.5	-	-
09:10	3.6	-	-
09:20	3.6	-	-
09:30	3.7	-	-
09:40	3.6	-	-
09:50	3.6	-	-
10:00	3.6	-	-
10:10	3.6	-	-
10:20	3.3	-	-
10:30	3.6	-	-
10:40	3.6	-	-
10:50	3.5	-	-
11:00	3.5	-	-
11:10	3.5	-	-
11:20	3.5	-	-
11:30	3.6	-	-
11:40	3.4	-	-
11:50	3.5	-	-
12:00	3.6	-	-
12:10	3.5	-	-
12:20	3.6	-	-
12:30	3.7	-	-
12:40	3.7	-	-
12:50	3.5	-	-
13:00	3.3	-	-
13:10	3.6	-	-
13:20	3.6	-	-
13:30	3.5	-	-
13:40	3.6	-	-
13:50	3.5	-	-
14:00	3.5	south	3.6
14:10	3.6	south	2.9
14:20	3.6	south	3.0
14:30	3.5	south	3.5
14:40	3.4	south-southeast	3.7
14:50	3.5	south-southeast	4.0
15:00	3.6	south	3.5
15:10	3.5	south	3.6
15:20	3.6	south	3.7
15:30	3.5	south	4.0
15:40	3.7	south	2.9
15:50	3.5	south	2.5
16:00	3.6	south	2.6
16:10	3.7	southwest	2.7
16:20	3.6	southwest	2.2
16:30	3.8	southwest	1.1
16:40	3.4	south	2.4
16:50	3.7	south	3.1
17:00	3.5	southwest	1.8
17:10	3.5	south-southwest	1.6
17:20	3.5	south-southwest	2.4
17:30	3.5	southwest	3.1
17:40	3.6	west-southwest	4.7
17:50	3.6	west	5.6
18:00	3.6	west	4.5
18:10	3.6	west	4.8
18:20	3.5	west	8.2
18:30	3.5	west	8.7
18:40	3.6	west	8.3
18:50	3.4	west	7.7
19:00	3.5	west	8.1
19:10	3.5	west	5.0
19:20	3.5	west-northwest	3.7
19:30	3.6	-	CALM
19:40	3.6	-	CALM
19:50	3.4	west-northwest	1.1
20:00	3.6	northwest	1.6
20:10	3.5	west-northwest	1.4
20:20	3.6	south-southwest	0.7
20:30	3.4	north	0.7
20:40	3.4	west	1.1
20:50	3.5	-	CALM
21:00	3.5	southwest	1.9
21:10	3.6	west	2.8
21:20	3.5	west-southwest	3.9
21:30	3.7	west-southwest	2.6
21:40	3.6	west-southwest	2.0
21:50	3.5	west	3.5
22:00	3.6	west-southwest	3.0
22:10	3.8	west	4.7
22:20	3.4	west	6.3
22:30	3.5	west-southwest	6.0
22:40	3.5	west-southwest	6.3
22:50	3.6	west-southwest	6.1
23:00	3.6	west-southwest	7.2
23:10	3.5	west	8.1
23:20	3.5	west	8.0
23:30	3.6	west	8.1
23:40	3.6	west	10.1
23:50	3.5	west	7.3