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

○Information

○Measurement value list ： 2025/04/20(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	south	5.1
00:10	3.6	south	4.8
00:20	3.6	south	4.0
00:30	3.6	south-southwest	1.6
00:40	3.7	west	0.7
00:50	3.6	north-northeast	0.8
01:00	3.6	north-northeast	1.6
01:10	3.6	north	1.6
01:20	3.6	north-northwest	1.8
01:30	3.5	west-northwest	0.7
01:40	3.6	-	CALM
01:50	3.6	-	CALM
02:00	3.5	north	0.8
02:10	3.5	north-northeast	1.1
02:20	3.6	north	1.4
02:30	3.5	north	1.5
02:40	3.5	north-northwest	1.9
02:50	3.7	north-northwest	1.3
03:00	3.6	north	1.8
03:10	3.5	north	1.9
03:20	3.6	north	2.2
03:30	3.6	north	2.2
03:40	3.6	north-northwest	2.2
03:50	3.5	north-northwest	2.1
04:00	3.6	north	1.8
04:10	3.5	north-northeast	1.6
04:20	3.6	north	1.0
04:30	3.5	northeast	0.5
04:40	3.6	northeast	1.0
04:50	3.4	north-northwest	1.0
05:00	3.6	-	CALM
05:10	3.7	-	CALM
05:20	3.6	-	CALM
05:30	3.6	south-southwest	0.7
05:40	3.4	-	CALM
05:50	3.6	southeast	0.5
06:00	3.8	-	CALM
06:10	3.5	-	CALM
06:20	3.7	-	CALM
06:30	3.6	-	CALM
06:40	3.7	south	0.5
06:50	3.6	-	CALM
07:00	3.7	-	CALM
07:10	3.7	north-northwest	1.3
07:20	3.7	-	CALM
07:30	3.6	-	CALM
07:40	3.5	east	0.5
07:50	3.6	-	CALM
08:00	3.6	west-northwest	1.6
08:10	3.5	north	0.7
08:20	3.6	northeast	1.6
08:30	3.5	north	1.6
08:40	3.5	north-northeast	1.0
08:50	3.7	north-northeast	0.7
09:00	3.7	north-northeast	0.7
09:10	3.7	-	CALM
09:20	3.6	-	CALM
09:30	3.6	-	CALM
09:40	3.5	west-southwest	0.8
09:50	3.7	-	CALM
10:00	3.7	east-southeast	1.3
10:10	3.7	southeast	1.3
10:20	3.6	south-southeast	1.1
10:30	3.6	south	0.8
10:40	3.6	south	1.8
10:50	3.7	southeast	2.5
11:00	3.7	southeast	4.0
11:10	3.6	southeast	4.3
11:20	3.7	south-southeast	3.3
11:30	3.7	south-southeast	2.2
11:40	3.5	south-southeast	2.1
11:50	3.5	south-southeast	2.4
12:00	3.5	south-southeast	2.7
12:10	3.5	south-southeast	3.3
12:20	3.5	south-southeast	3.2
12:30	3.6	south-southeast	3.5
12:40	3.7	south-southeast	4.3
12:50	3.6	south-southeast	5.4
13:00	3.6	southeast	4.0
13:10	3.7	southeast	2.5
13:20	3.7	southeast	4.8
13:30	3.6	southeast	4.3
13:40	3.5	southeast	4.8
13:50	3.5	southeast	6.5
14:00	3.5	southeast	7.0
14:10	3.7	south-southeast	6.5
14:20	3.6	south-southeast	6.0
14:30	3.7	south-southeast	4.6
14:40	3.5	south-southeast	4.8
14:50	3.7	south	4.4
15:00	3.6	south-southwest	3.5
15:10	3.5	south-southwest	2.1
15:20	3.6	south-southeast	1.8
15:30	3.6	south-southeast	3.5
15:40	3.7	south	4.0
15:50	3.6	south	3.2
16:00	3.6	south-southwest	0.8
16:10	3.5	south	1.6
16:20	3.7	south-southeast	1.0
16:30	3.6	south-southeast	2.1
16:40	3.7	south	2.4
16:50	3.5	south	2.1
17:00	3.6	south	1.9
17:10	3.7	southwest	1.6
17:20	3.6	west	1.9
17:30	3.5	northwest	3.7
17:40	3.4	west-northwest	5.4
17:50	3.6	west-northwest	5.1
18:00	3.7	west-northwest	4.3
18:10	3.7	west-northwest	3.3
18:20	3.7	northwest	3.2
18:30	3.5	northwest	4.1
18:40	3.6	northwest	4.0
18:50	3.5	north-northwest	4.6
19:00	3.6	north-northeast	5.9
19:10	3.7	north	7.3
19:20	3.8	north	7.3
19:30	3.7	north-northwest	7.6
19:40	3.6	north-northwest	4.9
19:50	3.6	northwest	2.9
20:00	3.6	west-northwest	4.3
20:10	3.6	west-northwest	4.6
20:20	3.6	west-northwest	4.1
20:30	3.7	west	3.2
20:40	3.5	north-northeast	2.7
20:50	3.7	northwest	5.7
21:00	3.6	northwest	4.0
21:10	3.6	north-northwest	2.9
21:20	3.5	north-northeast	3.0
21:30	3.7	northeast	1.8
21:40	3.5	northeast	3.7
21:50	3.5	north-northeast	2.2
22:00	3.6	north-northeast	2.5
22:10	3.5	north-northeast	1.8
22:20	3.4	north	1.8
22:30	3.5	north-northeast	2.4
22:40	3.5	north-northwest	1.4
22:50	3.6	north-northwest	0.7
23:00	3.6	north-northwest	1.9
23:10	3.8	west-northwest	1.8
23:20	3.7	northeast	1.0
23:30	3.7	west-northwest	1.8
23:40	3.5	west-northwest	1.4
23:50	3.5	north	1.4