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

○Information

○Measurement value list ： 2026/08/23(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	east-southeast	0.9
00:10	3.5	-	CALM
00:20	3.5	-	CALM
00:30	3.6	northwest	0.9
00:40	3.7	west	0.8
00:50	3.4	west-northwest	0.8
01:00	3.6	west-northwest	0.6
01:10	3.6	west-northwest	0.7
01:20	3.5	-	-
01:30	3.5	northwest	0.7
01:40	3.4	-	-
01:50	3.5	-	-
02:00	3.5	-	-
02:10	3.6	north	1.1
02:20	3.5	-	-
02:30	3.5	-	-
02:40	3.5	northwest	1.0
02:50	3.5	west-southwest	0.9
03:00	3.6	west-northwest	1.0
03:10	3.5	north-northwest	0.8
03:20	3.7	north-northwest	1.4
03:30	3.5	north-northeast	1.5
03:40	3.5	north-northeast	1.5
03:50	3.6	north	1.1
04:00	3.4	north	1.6
04:10	3.5	north-northeast	0.8
04:20	3.6	north-northeast	1.1
04:30	3.6	northeast	1.9
04:40	3.5	-	-
04:50	3.4	north-northeast	1.5
05:00	3.6	north	1.6
05:10	3.6	north	1.6
05:20	3.5	north	1.0
05:30	3.7	north-northeast	1.2
05:40	3.7	north	1.0
05:50	3.6	north-northwest	0.8
06:00	3.5	west-northwest	0.8
06:10	3.6	west-northwest	0.7
06:20	3.6	west-northwest	0.7
06:30	3.6	northwest	0.8
06:40	3.4	northwest	0.6
06:50	3.5	northwest	0.7
07:00	3.5	west	0.6
07:10	3.5	west-northwest	0.8
07:20	3.6	northwest	0.6
07:30	3.4	-	CALM
07:40	3.5	north	0.6
07:50	3.5	-	CALM
08:00	3.7	east	1.6
08:10	3.5	north-northeast	1.1
08:20	3.7	northwest	0.7
08:30	3.5	east-northeast	1.4
08:40	3.6	east-northeast	1.6
08:50	3.5	northeast	1.6
09:00	3.6	east-northeast	1.8
09:10	3.6	east-northeast	1.6
09:20	3.5	east-northeast	2.3
09:30	3.7	east-southeast	0.9
09:40	3.5	northeast	2.0
09:50	3.4	east-southeast	2.1
10:00	3.6	east-northeast	2.7
10:10	3.5	east-northeast	2.6
10:20	3.5	east-northeast	2.4
10:30	3.5	east-northeast	2.4
10:40	3.7	east-northeast	2.4
10:50	3.5	east	3.1
11:00	3.5	east-northeast	2.9
11:10	3.6	east-northeast	3.8
11:20	3.4	east-northeast	3.1
11:30	3.5	east-northeast	3.2
11:40	3.5	east	3.0
11:50	3.6	east-northeast	3.7
12:00	3.6	east-northeast	3.7
12:10	3.3	east	3.3
12:20	3.7	east-northeast	3.8
12:30	3.5	east-southeast	3.0
12:40	3.5	east-southeast	2.1
12:50	3.5	southeast	2.7
13:00	3.6	east	3.4
13:10	3.6	east-southeast	3.0
13:20	3.6	southeast	3.0
13:30	3.6	east	3.3
13:40	3.6	east	3.7
13:50	3.4	southeast	3.3
14:00	3.5	east	3.0
14:10	3.5	east-southeast	2.6
14:20	3.4	east	1.7
14:30	3.6	east	1.8
14:40	3.7	east-southeast	1.7
14:50	3.7	east-southeast	2.5
15:00	3.6	east	2.4
15:10	3.6	east	3.9
15:20	3.5	east-southeast	2.1
15:30	3.5	east	3.4
15:40	3.5	southeast	1.6
15:50	3.5	southeast	2.0
16:00	3.6	southeast	1.8
16:10	3.6	south-southeast	2.0
16:20	3.6	east-southeast	1.5
16:30	3.5	southeast	1.6
16:40	3.5	southeast	1.7
16:50	3.5	east-southeast	2.2
17:00	3.6	southeast	2.5
17:10	3.5	east-southeast	2.3
17:20	3.7	east-southeast	2.0
17:30	3.5	south	1.8
17:40	3.6	south	2.5
17:50	3.4	south	1.9
18:00	3.7	south	1.4
18:10	3.6	south	2.0
18:20	3.7	south	2.4
18:30	3.4	south-southeast	1.9
18:40	3.6	-	-
18:50	3.4	south-southeast	2.3
19:00	3.5	south-southeast	3.2
19:10	3.7	south	3.8
19:20	3.6	south-southeast	3.9
19:30	3.5	south-southeast	3.6
19:40	3.4	south	3.5
19:50	3.5	south	3.5
20:00	3.6	south	3.3
20:10	3.6	south	4.2
20:20	3.6	south	4.0
20:30	3.7	south	4.2
20:40	3.7	south	4.1
20:50	3.6	south	4.8
21:00	3.6	south	4.6
21:10	3.5	south	4.3
21:20	3.4	south	4.5
21:30	3.6	south	5.4
21:40	3.5	south	5.6
21:50	3.5	south	5.4
22:00	3.5	south	5.3
22:10	3.5	south	4.0
22:20	3.6	south	3.7
22:30	3.5	south	3.8
22:40	3.5	south	4.3
22:50	3.8	south	4.4
23:00	3.6	south	3.9
23:10	3.5	south	3.4
23:20	3.5	south-southwest	3.9
23:30	3.5	south	3.7
23:40	3.5	south-southwest	2.5
23:50	3.4	south-southwest	2.8