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

○Information

○Measurement value list ： 2026/06/25(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	0.9
00:10	3.5	southeast	1.0
00:20	3.6	southeast	1.0
00:30	3.7	southeast	0.9
00:40	3.7	-	CALM
00:50	3.5	-	CALM
01:00	3.5	-	CALM
01:10	3.5	west	0.6
01:20	3.5	-	CALM
01:30	3.4	-	CALM
01:40	3.5	west	0.9
01:50	3.6	-	CALM
02:00	3.7	-	CALM
02:10	3.5	north-northwest	0.6
02:20	3.6	-	CALM
02:30	3.5	north-northeast	0.9
02:40	3.6	north-northwest	0.6
02:50	3.6	north-northwest	0.7
03:00	3.7	north-northwest	0.9
03:10	3.6	north-northwest	1.0
03:20	3.7	-	CALM
03:30	3.8	north	0.8
03:40	3.6	north	1.0
03:50	3.6	north-northwest	0.8
04:00	3.6	north-northeast	1.4
04:10	3.7	north-northwest	1.3
04:20	3.5	northwest	1.9
04:30	3.5	north-northwest	2.3
04:40	3.6	northwest	2.4
04:50	3.5	north-northwest	1.7
05:00	3.6	-	CALM
05:10	3.5	-	CALM
05:20	3.6	north	1.9
05:30	3.5	north-northwest	1.8
05:40	3.6	north-northwest	1.5
05:50	3.6	north-northwest	1.9
06:00	3.7	north-northwest	2.5
06:10	3.5	north	2.3
06:20	3.5	north-northwest	2.8
06:30	3.5	north-northwest	2.9
06:40	3.7	north-northwest	2.1
06:50	3.7	north-northwest	2.2
07:00	3.6	north	2.2
07:10	3.7	north-northwest	2.3
07:20	3.6	north-northwest	1.6
07:30	3.4	north	1.1
07:40	3.6	north-northeast	0.9
07:50	3.6	-	CALM
08:00	3.4	north-northwest	1.7
08:10	3.5	northwest	1.5
08:20	3.4	north-northwest	1.6
08:30	3.6	northwest	1.4
08:40	3.7	northwest	1.0
08:50	3.7	north-northwest	1.0
09:00	3.6	-	CALM
09:10	3.4	-	CALM
09:20	3.7	northeast	0.7
09:30	3.6	east-northeast	1.4
09:40	3.5	east-northeast	0.9
09:50	3.5	northeast	0.7
10:00	3.6	north-northeast	1.1
10:10	3.6	north-northeast	0.7
10:20	3.5	-	CALM
10:30	3.5	northeast	0.9
10:40	3.5	north	0.9
10:50	3.6	north-northeast	0.9
11:00	3.6	east-northeast	1.3
11:10	3.5	northeast	1.4
11:20	3.6	northeast	1.4
11:30	3.6	northeast	1.3
11:40	3.7	east-southeast	1.4
11:50	3.8	south-southeast	1.8
12:00	3.5	southeast	2.5
12:10	3.4	southeast	2.5
12:20	3.7	south-southeast	1.7
12:30	3.6	east	2.5
12:40	3.7	east-northeast	2.4
12:50	3.6	east	2.3
13:00	3.6	east-southeast	2.3
13:10	3.5	east-southeast	2.8
13:20	3.5	south-southeast	2.2
13:30	3.5	south-southeast	3.2
13:40	3.6	southeast	2.2
13:50	3.7	south-southeast	2.6
14:00	3.5	southeast	3.1
14:10	3.6	southeast	3.1
14:20	3.6	south-southeast	3.2
14:30	3.5	south-southeast	3.4
14:40	3.7	south-southeast	3.7
14:50	3.5	southeast	3.3
15:00	3.6	south-southeast	3.3
15:10	3.5	south-southeast	3.3
15:20	3.5	southeast	3.6
15:30	3.7	southeast	3.2
15:40	3.6	south-southeast	3.2
15:50	3.5	south-southeast	3.2
16:00	3.6	south	3.1
16:10	3.6	south	3.2
16:20	3.7	south	2.8
16:30	3.6	south	2.4
16:40	3.5	south-southeast	2.2
16:50	3.7	south-southeast	2.3
17:00	3.4	south-southeast	2.1
17:10	3.6	south-southeast	2.2
17:20	3.6	south	2.2
17:30	3.7	south	2.4
17:40	3.6	south	2.1
17:50	3.6	south-southeast	2.2
18:00	3.4	south-southeast	2.2
18:10	3.7	southeast	2.4
18:20	3.6	southeast	2.4
18:30	3.5	east-southeast	2.8
18:40	3.5	southeast	3.0
18:50	3.6	southeast	2.8
19:00	3.6	southeast	2.2
19:10	3.5	southeast	2.2
19:20	3.7	east-southeast	2.2
19:30	3.8	southeast	2.0
19:40	3.5	southeast	2.9
19:50	3.5	southeast	3.9
20:00	3.6	east-southeast	3.4
20:10	3.5	southeast	2.9
20:20	3.5	southeast	2.4
20:30	3.7	southeast	2.4
20:40	3.5	southeast	2.0
20:50	3.6	southeast	1.8
21:00	3.5	south-southeast	1.7
21:10	3.6	southeast	1.3
21:20	3.7	southeast	0.8
21:30	3.7	south-southeast	1.2
21:40	3.6	east-southeast	2.0
21:50	3.6	east-southeast	2.1
22:00	3.6	east-southeast	2.5
22:10	3.6	east-southeast	2.1
22:20	3.6	east-southeast	2.5
22:30	3.6	east-southeast	2.1
22:40	3.5	east-southeast	3.2
22:50	3.6	east-southeast	3.9
23:00	3.6	east-southeast	4.3
23:10	3.6	east-southeast	4.7
23:20	3.5	southeast	3.5
23:30	3.5	south-southeast	2.2
23:40	3.5	south-southeast	2.3
23:50	3.7	southeast	2.1