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

○Information

○Measurement value list ： 2026/06/26(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	south-southeast	2.4
00:10	3.8	south-southeast	2.8
00:20	3.7	southeast	1.9
00:30	3.6	south-southeast	1.9
00:40	3.6	southeast	2.3
00:50	3.6	east-southeast	2.4
01:00	3.7	east-southeast	2.4
01:10	3.6	south	0.9
01:20	3.7	southeast	1.9
01:30	3.5	southeast	1.3
01:40	3.6	east-southeast	1.5
01:50	3.6	east-southeast	1.1
02:00	3.7	-	CALM
02:10	3.6	-	CALM
02:20	3.7	east	0.6
02:30	3.7	east-southeast	0.9
02:40	3.6	-	CALM
02:50	3.7	-	CALM
03:00	3.6	northeast	0.6
03:10	3.5	-	CALM
03:20	3.6	south	1.0
03:30	3.7	east	0.7
03:40	3.7	south-southeast	0.6
03:50	3.8	-	CALM
04:00	3.6	southwest	1.3
04:10	3.6	-	CALM
04:20	3.6	-	CALM
04:30	3.5	north	1.0
04:40	3.6	north-northwest	1.2
04:50	3.7	north-northwest	0.6
05:00	3.6	north-northwest	0.7
05:10	3.4	north	1.4
05:20	3.6	-	-
05:30	3.6	-	CALM
05:40	3.6	-	CALM
05:50	3.6	-	CALM
06:00	3.5	northeast	0.6
06:10	3.5	northeast	1.1
06:20	3.5	-	CALM
06:30	3.6	-	-
06:40	3.4	-	-
06:50	3.7	southeast	0.7
07:00	3.6	southeast	0.9
07:10	3.6	south-southeast	1.5
07:20	3.5	south-southeast	2.1
07:30	3.5	southeast	1.5
07:40	3.4	southeast	1.8
07:50	3.6	south-southeast	2.7
08:00	3.6	south-southeast	2.8
08:10	3.6	south-southeast	3.0
08:20	3.8	south-southeast	3.2
08:30	3.5	south-southeast	3.6
08:40	3.7	southeast	3.9
08:50	3.6	south-southeast	4.0
09:00	3.7	south-southeast	4.2
09:10	3.5	south	4.4
09:20	3.6	south-southeast	4.6
09:30	3.5	south-southeast	4.2
09:40	3.6	south-southeast	3.3
09:50	3.6	southeast	2.3
10:00	3.6	south-southeast	3.0
10:10	3.6	south-southeast	4.1
10:20	3.5	southeast	3.5
10:30	3.5	southeast	4.0
10:40	3.5	south	4.6
10:50	3.4	south-southeast	3.9
11:00	3.6	south	4.7
11:10	3.6	south	3.0
11:20	3.8	south-southeast	3.1
11:30	3.6	south-southeast	3.2
11:40	3.6	south-southeast	3.4
11:50	3.7	south-southeast	4.4
12:00	3.7	south	2.6
12:10	3.5	south	2.7
12:20	3.3	south	1.9
12:30	3.6	south	2.7
12:40	3.5	south	1.4
12:50	3.6	south-southwest	1.7
13:00	3.5	south	1.5
13:10	3.6	south	1.4
13:20	3.7	south	2.7
13:30	3.5	south	3.6
13:40	3.6	south	3.9
13:50	3.4	south	2.3
14:00	3.5	southwest	1.7
14:10	3.5	west-southwest	2.2
14:20	3.5	west-southwest	2.7
14:30	3.5	west-southwest	1.4
14:40	3.7	southwest	1.5
14:50	3.7	west	1.4
15:00	3.5	east-southeast	1.7
15:10	3.6	south-southeast	3.4
15:20	3.6	south-southeast	3.5
15:30	3.4	south-southeast	3.5
15:40	3.7	south-southeast	4.1
15:50	3.4	south-southwest	3.0
16:00	3.5	south-southwest	1.3
16:10	3.5	southeast	2.3
16:20	3.8	southeast	1.2
16:30	3.4	south	1.9
16:40	3.6	west-southwest	1.3
16:50	3.6	northwest	1.4
17:00	3.6	northwest	2.2
17:10	3.5	northwest	3.4
17:20	3.6	northwest	3.5
17:30	3.5	northeast	1.1
17:40	3.6	east-southeast	2.8
17:50	3.6	southeast	1.0
18:00	3.7	south-southeast	1.1
18:10	3.5	south-southwest	1.2
18:20	3.7	west-southwest	1.5
18:30	3.5	northwest	1.9
18:40	3.7	west-northwest	1.6
18:50	3.4	west-northwest	1.5
19:00	3.5	north-northwest	2.1
19:10	3.6	north	1.9
19:20	3.7	north	1.4
19:30	3.7	northeast	1.1
19:40	3.7	north	1.9
19:50	3.6	north-northwest	1.3
20:00	3.4	west-northwest	1.5
20:10	3.5	west-northwest	1.6
20:20	3.6	west-southwest	2.8
20:30	3.5	southwest	3.7
20:40	3.5	south-southeast	1.6
20:50	3.6	south-southeast	2.2
21:00	3.7	south-southeast	2.1
21:10	3.6	south-southeast	3.5
21:20	3.6	south	4.0
21:30	3.6	south	5.2
21:40	3.5	south-southwest	4.9
21:50	3.7	south-southeast	4.0
22:00	3.5	south-southwest	6.4
22:10	3.6	south-southwest	6.9
22:20	3.6	south-southwest	5.0
22:30	3.5	south	4.2
22:40	3.6	south	4.7
22:50	3.6	south	4.2
23:00	3.3	south	3.3
23:10	3.5	south-southeast	4.1
23:20	3.5	south	6.2
23:30	3.5	south	6.5
23:40	3.5	south-southeast	5.5
23:50	3.6	south-southeast	6.5