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

○Information

○Measurement value list ： 2025/08/31(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	northwest	2.2
00:10	3.6	north-northeast	2.0
00:20	3.5	north-northeast	1.3
00:30	3.4	-	CALM
00:40	3.7	northwest	0.9
00:50	3.6	north-northwest	1.0
01:00	3.3	northwest	0.8
01:10	3.5	north-northeast	1.4
01:20	3.5	north-northeast	1.5
01:30	3.7	northeast	1.9
01:40	3.4	northeast	2.2
01:50	3.4	north-northeast	1.7
02:00	3.6	northeast	1.6
02:10	3.5	north	0.9
02:20	3.5	-	CALM
02:30	3.7	-	CALM
02:40	3.5	south-southwest	0.6
02:50	3.5	south-southwest	0.6
03:00	3.6	-	CALM
03:10	3.5	south-southwest	0.6
03:20	3.5	south-southwest	1.6
03:30	3.5	south	1.6
03:40	3.4	south-southwest	1.2
03:50	3.6	southwest	1.1
04:00	3.6	south	0.7
04:10	3.7	south	0.8
04:20	3.6	east-southeast	0.8
04:30	3.5	-	CALM
04:40	3.6	north	0.6
04:50	3.4	north-northwest	0.8
05:00	3.6	north	1.0
05:10	3.4	north-northeast	1.3
05:20	3.5	-	CALM
05:30	3.5	northwest	0.7
05:40	3.6	-	CALM
05:50	3.6	-	CALM
06:00	3.8	-	CALM
06:10	3.5	-	CALM
06:20	3.6	east-northeast	0.6
06:30	3.6	north-northeast	1.4
06:40	3.5	northeast	1.5
06:50	3.6	east-northeast	1.7
07:00	3.6	north-northeast	1.3
07:10	3.5	north-northeast	1.1
07:20	3.6	-	CALM
07:30	3.6	east	0.9
07:40	3.6	east-northeast	1.0
07:50	3.6	-	CALM
08:00	3.6	-	CALM
08:10	3.6	-	CALM
08:20	3.5	north-northwest	0.8
08:30	3.7	northeast	2.3
08:40	3.6	east-northeast	3.4
08:50	3.5	east-southeast	2.5
09:00	3.5	east-northeast	2.2
09:10	3.6	east	2.3
09:20	3.4	east-southeast	2.1
09:30	3.6	east	2.8
09:40	3.5	east-northeast	3.3
09:50	3.6	east-northeast	3.1
10:00	3.5	east-northeast	2.5
10:10	3.4	east-northeast	2.5
10:20	3.7	east-northeast	3.3
10:30	3.5	east-northeast	2.8
10:40	3.5	east-northeast	3.6
10:50	3.6	east-northeast	3.9
11:00	3.6	east-northeast	3.5
11:10	3.5	east	3.7
11:20	3.7	east	3.3
11:30	3.8	east	3.5
11:40	3.6	east-northeast	3.5
11:50	3.5	east	3.7
12:00	3.7	east-northeast	3.9
12:10	3.6	east-southeast	3.3
12:20	3.6	east-southeast	3.9
12:30	3.5	east	3.9
12:40	3.4	east	4.4
12:50	3.5	east	3.9
13:00	3.5	east	3.4
13:10	3.6	east	4.0
13:20	3.5	east	4.3
13:30	3.4	east	4.0
13:40	3.4	east	4.4
13:50	3.5	east	4.3
14:00	3.6	east	4.5
14:10	3.5	east	4.5
14:20	3.6	east	4.6
14:30	3.6	east	4.4
14:40	3.7	east-southeast	3.9
14:50	3.6	southeast	4.2
15:00	3.6	east-southeast	4.7
15:10	3.4	east-southeast	5.0
15:20	3.6	east-southeast	4.4
15:30	3.5	east-southeast	5.1
15:40	3.6	east-southeast	4.0
15:50	3.5	southeast	3.6
16:00	3.5	east-southeast	4.4
16:10	3.5	east-southeast	4.6
16:20	3.5	east-southeast	4.9
16:30	3.5	east	4.3
16:40	3.5	east-southeast	4.2
16:50	3.6	east-southeast	3.3
17:00	3.6	southeast	3.7
17:10	3.5	southeast	3.3
17:20	3.6	southeast	3.5
17:30	3.3	east-southeast	3.3
17:40	3.5	east-southeast	3.3
17:50	3.5	southeast	3.4
18:00	3.5	east-southeast	3.4
18:10	3.6	east-southeast	2.6
18:20	3.4	east-southeast	3.4
18:30	3.7	east-southeast	3.1
18:40	3.5	east-southeast	2.4
18:50	3.6	east	2.1
19:00	3.5	east-southeast	3.0
19:10	3.5	east-southeast	2.5
19:20	3.4	east-southeast	2.4
19:30	3.4	southeast	2.9
19:40	3.6	southeast	2.6
19:50	3.7	east-southeast	2.9
20:00	3.6	east-southeast	2.6
20:10	3.6	east-southeast	2.9
20:20	3.5	east-southeast	2.7
20:30	3.7	south	1.7
20:40	3.6	southeast	1.1
20:50	3.6	south	1.6
21:00	3.5	south	1.5
21:10	3.5	south-southwest	0.9
21:20	3.4	south-southwest	1.1
21:30	3.4	-	CALM
21:40	3.5	-	CALM
21:50	3.5	southeast	0.7
22:00	3.7	-	CALM
22:10	3.5	east	0.6
22:20	3.5	-	CALM
22:30	3.8	south-southwest	0.9
22:40	3.6	south-southwest	1.0
22:50	3.5	southwest	1.4
23:00	3.5	southwest	1.3
23:10	3.3	southwest	1.3
23:20	3.6	south-southwest	0.6
23:30	3.5	-	CALM
23:40	3.5	south-southwest	1.0
23:50	3.5	south	1.0