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

○Information

○Measurement value list ： 2026/07/25(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	3.6	southeast	1.5
00:10	3.6	south	2.2
00:20	3.5	south-southeast	2.5
00:30	3.4	south	2.6
00:40	3.5	south	2.6
00:50	3.4	south	3.3
01:00	3.5	south	2.8
01:10	3.5	south-southeast	2.4
01:20	3.5	south-southeast	1.5
01:30	3.4	south-southeast	2.5
01:40	3.5	south-southeast	2.4
01:50	3.6	south-southeast	2.1
02:00	3.5	south-southwest	2.0
02:10	3.8	south	2.0
02:20	3.6	south	1.8
02:30	3.5	south-southeast	1.1
02:40	3.5	south	1.2
02:50	3.6	south	1.3
03:00	3.5	-	CALM
03:10	3.5	-	CALM
03:20	3.6	north-northwest	0.8
03:30	3.5	north-northeast	1.7
03:40	3.6	north-northeast	2.0
03:50	3.6	north-northeast	2.4
04:00	3.5	north	1.5
04:10	3.6	northeast	1.8
04:20	3.6	north-northeast	1.1
04:30	3.6	north-northwest	2.3
04:40	3.6	north	1.1
04:50	3.7	northeast	1.9
05:00	3.6	north-northeast	1.9
05:10	3.6	northeast	1.9
05:20	3.6	north-northeast	1.6
05:30	3.5	north-northwest	1.7
05:40	3.5	north-northeast	1.8
05:50	3.5	north-northeast	1.9
06:00	3.4	north	0.7
06:10	3.5	north-northeast	1.4
06:20	3.6	northwest	1.5
06:30	3.5	north	1.8
06:40	3.5	north	1.2
06:50	3.4	northwest	1.9
07:00	3.5	north-northwest	1.8
07:10	3.5	northwest	2.0
07:20	3.4	north-northwest	2.4
07:30	3.4	north-northwest	1.9
07:40	3.5	north-northwest	2.9
07:50	3.6	north-northwest	2.0
08:00	3.4	north-northeast	2.0
08:10	3.4	north	2.7
08:20	3.5	north-northwest	2.4
08:30	3.7	north-northwest	3.0
08:40	3.5	north	3.7
08:50	3.3	north-northwest	3.3
09:00	3.6	north-northwest	4.1
09:10	3.4	north-northwest	3.7
09:20	3.5	north	3.6
09:30	3.5	north	4.7
09:40	3.4	north-northeast	6.2
09:50	3.6	north-northeast	5.5
10:00	3.6	north-northeast	6.4
10:10	3.7	north-northeast	5.2
10:20	3.5	north-northeast	4.7
10:30	3.4	north	4.2
10:40	3.7	north	3.9
10:50	3.5	north	4.5
11:00	3.4	north-northwest	4.9
11:10	3.5	north	4.5
11:20	3.6	north	5.1
11:30	3.5	north-northeast	5.7
11:40	3.5	northeast	5.4
11:50	3.5	north-northeast	5.0
12:00	3.7	north-northeast	6.0
12:10	3.6	north-northeast	5.2
12:20	3.7	north-northeast	4.8
12:30	3.5	north	3.7
12:40	3.6	north-northeast	5.2
12:50	3.5	north-northeast	3.5
13:00	3.5	north-northeast	4.7
13:10	3.6	north	5.6
13:20	3.5	north	4.5
13:30	3.4	north	3.2
13:40	3.7	north	3.5
13:50	3.6	north	3.4
14:00	3.5	north	3.3
14:10	3.6	north	3.3
14:20	3.7	north-northwest	3.0
14:30	3.6	north-northwest	2.9
14:40	3.5	north	2.9
14:50	3.5	north-northwest	4.2
15:00	3.6	north-northwest	3.8
15:10	3.5	north	3.0
15:20	3.5	north	3.8
15:30	3.5	north-northwest	4.7
15:40	3.5	northwest	3.4
15:50	3.6	northwest	3.1
16:00	3.5	north	3.8
16:10	3.6	north	3.6
16:20	3.5	north	3.4
16:30	3.6	north-northeast	3.3
16:40	3.6	north-northeast	5.2
16:50	3.5	northeast	4.2
17:00	3.5	east-northeast	4.4
17:10	3.6	east-northeast	3.8
17:20	3.3	east-northeast	2.7
17:30	3.4	east-northeast	2.6
17:40	3.6	east-northeast	2.1
17:50	3.5	east-northeast	1.4
18:00	3.4	east-southeast	1.8
18:10	3.7	east	2.5
18:20	3.6	east-southeast	2.9
18:30	3.6	east	3.3
18:40	3.6	east	1.8
18:50	3.6	east	1.5
19:00	3.6	east	3.0
19:10	3.5	southeast	1.9
19:20	3.6	east	2.1
19:30	3.5	east-northeast	1.7
19:40	3.6	east-southeast	1.1
19:50	3.5	east	1.8
20:00	3.6	east-southeast	2.4
20:10	3.4	east-southeast	1.7
20:20	3.5	east	1.5
20:30	3.6	east-southeast	1.5
20:40	3.6	southeast	1.5
20:50	3.7	east-southeast	2.1
21:00	3.5	east-southeast	2.5
21:10	3.5	southeast	1.5
21:20	3.5	south-southeast	0.7
21:30	3.5	-	CALM
21:40	3.5	-	CALM
21:50	3.5	west	0.6
22:00	3.4	-	CALM
22:10	3.5	-	CALM
22:20	3.7	west-northwest	1.3
22:30	3.7	-	CALM
22:40	3.5	-	CALM
22:50	3.7	-	CALM
23:00	3.5	-	CALM
23:10	3.6	west-northwest	0.7
23:20	3.5	-	CALM
23:30	3.5	northwest	1.0
23:40	3.6	-	CALM
23:50	3.6	-	CALM