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

○Information

○Measurement value list ： 2026/04/13(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	-	CALM
00:10	3.6	south-southeast	0.6
00:20	3.5	southeast	1.1
00:30	3.4	south-southeast	1.2
00:40	3.7	-	CALM
00:50	3.5	southeast	1.1
01:00	3.7	-	CALM
01:10	3.6	-	CALM
01:20	3.5	east-southeast	0.9
01:30	3.5	east-southeast	1.4
01:40	3.7	south-southeast	0.7
01:50	3.6	south-southeast	0.7
02:00	3.6	south	0.7
02:10	3.6	-	CALM
02:20	3.5	-	CALM
02:30	3.5	-	CALM
02:40	3.7	south	0.8
02:50	3.6	-	CALM
03:00	3.7	south-southeast	0.6
03:10	3.4	south-southeast	1.0
03:20	3.6	southeast	1.0
03:30	3.6	-	CALM
03:40	3.7	south-southeast	0.8
03:50	3.6	-	CALM
04:00	3.5	southeast	0.7
04:10	3.7	southeast	0.6
04:20	3.5	east-southeast	1.1
04:30	3.6	east-southeast	1.1
04:40	3.4	east	0.9
04:50	3.6	east	1.3
05:00	3.6	southeast	0.6
05:10	3.5	east	0.6
05:20	3.4	east-southeast	0.7
05:30	3.6	-	CALM
05:40	3.5	-	CALM
05:50	3.6	-	CALM
06:00	3.6	east-northeast	0.6
06:10	3.5	-	CALM
06:20	3.6	east-southeast	0.7
06:30	3.7	-	CALM
06:40	3.6	southeast	1.1
06:50	3.5	east-southeast	1.6
07:00	3.5	east-southeast	2.3
07:10	3.4	east-southeast	1.7
07:20	3.6	east	2.0
07:30	3.4	east-southeast	2.1
07:40	3.6	east-southeast	1.9
07:50	3.7	east-southeast	2.8
08:00	3.6	east-southeast	2.9
08:10	3.6	southeast	2.9
08:20	3.7	southeast	2.8
08:30	3.7	south-southeast	3.1
08:40	3.7	southeast	4.0
08:50	3.6	southeast	4.1
09:00	3.6	south-southeast	4.0
09:10	3.6	south-southeast	3.6
09:20	3.6	east-southeast	2.7
09:30	3.7	east-southeast	3.4
09:40	3.6	east-southeast	2.4
09:50	3.7	east-southeast	3.4
10:00	3.5	east	2.6
10:10	3.4	southeast	2.8
10:20	3.6	southeast	3.6
10:30	3.6	southeast	3.4
10:40	3.5	southeast	4.2
10:50	3.5	south-southeast	4.7
11:00	3.7	south-southeast	4.7
11:10	3.4	southeast	4.2
11:20	3.5	south-southeast	4.2
11:30	3.7	southeast	3.9
11:40	3.4	east-southeast	4.5
11:50	3.6	south-southeast	5.0
12:00	3.8	south-southeast	4.7
12:10	3.6	south-southeast	4.5
12:20	3.4	south-southeast	3.9
12:30	3.5	south-southeast	4.0
12:40	3.6	south-southeast	4.4
12:50	3.6	south-southeast	6.6
13:00	3.7	south	6.5
13:10	3.6	south-southeast	5.9
13:20	3.6	south-southeast	5.9
13:30	3.5	south-southeast	5.9
13:40	3.6	south-southeast	6.3
13:50	3.6	south-southeast	6.8
14:00	3.5	south-southeast	6.0
14:10	3.6	south	7.2
14:20	3.6	south	5.5
14:30	3.6	south	5.3
14:40	3.5	south	5.7
14:50	3.6	south-southeast	5.9
15:00	3.5	south-southeast	4.1
15:10	3.6	south	6.3
15:20	3.6	south	5.1
15:30	3.7	south	5.1
15:40	3.5	south	5.0
15:50	3.6	south	5.1
16:00	3.5	south	3.7
16:10	3.6	south-southwest	2.2
16:20	3.5	west-southwest	3.5
16:30	3.5	west	4.2
16:40	3.4	west	3.1
16:50	3.5	west-southwest	5.2
17:00	3.7	west-southwest	4.6
17:10	3.5	west-southwest	3.5
17:20	3.5	southwest	2.5
17:30	3.4	west-southwest	3.4
17:40	3.6	west	1.9
17:50	3.5	north-northwest	2.2
18:00	3.5	north	4.1
18:10	3.7	north	4.6
18:20	3.5	north	4.6
18:30	3.6	north-northwest	4.8
18:40	3.6	north-northwest	3.8
18:50	3.6	northwest	2.7
19:00	3.6	northwest	3.4
19:10	3.5	north-northwest	4.1
19:20	3.6	north-northwest	3.9
19:30	3.6	northwest	3.3
19:40	3.6	northwest	4.4
19:50	3.6	north-northwest	4.1
20:00	3.6	northwest	3.3
20:10	3.6	northwest	3.1
20:20	3.5	northwest	3.6
20:30	3.6	northwest	3.5
20:40	3.5	northwest	3.3
20:50	3.5	northwest	3.2
21:00	3.6	northwest	3.4
21:10	3.6	northwest	2.7
21:20	3.7	west	2.1
21:30	3.7	west	1.5
21:40	3.5	northwest	2.7
21:50	3.6	northwest	4.1
22:00	3.6	north-northwest	4.1
22:10	3.5	north	1.6
22:20	3.7	north-northwest	4.9
22:30	3.6	north-northwest	5.9
22:40	3.6	north-northwest	6.2
22:50	3.5	north-northwest	6.7
23:00	3.6	north-northwest	6.8
23:10	3.7	north-northwest	6.5
23:20	3.6	northwest	6.9
23:30	3.7	northwest	6.3
23:40	3.5	northwest	6.5
23:50	3.7	northwest	6.1