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

○Information

○Measurement value list ： 2025/10/04(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	1.0
00:10	3.5	southwest	1.2
00:20	3.6	southwest	0.9
00:30	3.6	south	0.9
00:40	3.5	south-southwest	1.0
00:50	3.5	south-southwest	1.4
01:00	3.6	southwest	1.4
01:10	3.7	southwest	1.8
01:20	3.7	southwest	1.5
01:30	3.7	southwest	1.7
01:40	3.6	south-southwest	1.3
01:50	3.4	south-southwest	1.4
02:00	3.8	south-southwest	0.9
02:10	3.6	south-southwest	0.6
02:20	3.5	-	CALM
02:30	3.6	-	CALM
02:40	3.7	north-northeast	1.4
02:50	3.6	north-northeast	1.1
03:00	3.4	north-northeast	1.3
03:10	3.5	northwest	3.1
03:20	3.4	northwest	3.7
03:30	3.5	northwest	3.1
03:40	3.6	northwest	3.2
03:50	3.7	northwest	2.9
04:00	3.7	northwest	2.4
04:10	3.6	northwest	2.4
04:20	3.8	northwest	2.5
04:30	3.6	northwest	2.2
04:40	3.7	northwest	2.3
04:50	3.4	northwest	2.7
05:00	3.6	northwest	2.7
05:10	3.5	northwest	2.8
05:20	3.4	northwest	3.2
05:30	3.7	northwest	3.6
05:40	3.5	northwest	4.0
05:50	3.6	northwest	3.6
06:00	3.5	north-northwest	4.0
06:10	3.5	north-northwest	3.6
06:20	3.5	north-northwest	3.1
06:30	3.6	northwest	3.2
06:40	3.3	northwest	3.6
06:50	3.5	northwest	3.7
07:00	3.6	northwest	3.0
07:10	3.6	northwest	2.7
07:20	3.6	northwest	3.0
07:30	3.6	northwest	2.5
07:40	3.5	north-northwest	2.6
07:50	3.5	north-northwest	2.7
08:00	3.5	northwest	2.1
08:10	3.7	northwest	1.6
08:20	3.7	west-northwest	1.2
08:30	3.7	northwest	0.9
08:40	3.5	-	CALM
08:50	3.7	northwest	0.7
09:00	3.4	north-northeast	0.7
09:10	3.7	east-northeast	1.3
09:20	3.6	east-southeast	1.3
09:30	3.6	east-northeast	1.3
09:40	3.6	north-northeast	0.7
09:50	3.5	northeast	1.3
10:00	3.6	east-northeast	1.7
10:10	3.5	east-northeast	1.3
10:20	3.6	east	1.5
10:30	3.6	east	1.8
10:40	3.6	east	3.2
10:50	3.6	east-northeast	3.9
11:00	3.6	east-northeast	3.3
11:10	3.6	east-northeast	1.8
11:20	3.7	east-northeast	2.4
11:30	3.7	east-northeast	2.2
11:40	3.6	east-northeast	2.9
11:50	3.6	east	1.7
12:00	3.6	east-northeast	2.5
12:10	3.6	east-northeast	2.9
12:20	3.6	east-northeast	2.1
12:30	3.5	east-northeast	1.7
12:40	3.6	east-northeast	1.5
12:50	3.7	east-northeast	1.6
13:00	3.7	east-northeast	2.4
13:10	3.6	east-northeast	2.5
13:20	3.7	east	2.8
13:30	3.6	east	2.6
13:40	3.5	east	3.2
13:50	3.7	east-northeast	3.1
14:00	3.6	east-northeast	2.7
14:10	3.7	east	2.0
14:20	3.7	east-southeast	2.5
14:30	3.6	east	3.3
14:40	3.6	east-southeast	1.1
14:50	3.6	-	CALM
15:00	3.6	east-southeast	1.7
15:10	3.6	southeast	1.0
15:20	3.6	east-southeast	0.8
15:30	3.5	south-southeast	0.9
15:40	3.5	east-southeast	0.9
15:50	3.5	east-southeast	1.4
16:00	3.6	southeast	1.1
16:10	3.6	south-southeast	1.2
16:20	3.7	-	CALM
16:30	3.5	west	0.7
16:40	3.6	west-southwest	1.4
16:50	3.7	west-southwest	0.9
17:00	3.7	-	CALM
17:10	3.5	east-northeast	0.6
17:20	3.5	-	CALM
17:30	3.5	southwest	1.2
17:40	3.5	west	1.1
17:50	3.6	-	-
18:00	3.6	west	0.8
18:10	3.6	-	CALM
18:20	3.6	-	CALM
18:30	3.6	-	CALM
18:40	3.8	west-southwest	1.0
18:50	3.5	west-southwest	0.6
19:00	3.6	-	CALM
19:10	3.5	-	CALM
19:20	3.6	-	CALM
19:30	3.5	-	CALM
19:40	3.5	-	CALM
19:50	3.6	west-southwest	0.8
20:00	3.7	west-southwest	1.0
20:10	3.6	-	CALM
20:20	3.6	-	CALM
20:30	3.6	-	CALM
20:40	3.7	-	CALM
20:50	3.5	-	CALM
21:00	3.4	southeast	0.6
21:10	3.6	-	CALM
21:20	3.5	-	CALM
21:30	3.6	east	1.1
21:40	3.6	east	1.0
21:50	3.5	east-southeast	1.2
22:00	3.6	east-southeast	1.9
22:10	3.7	east-southeast	1.3
22:20	3.6	east	0.6
22:30	3.5	-	CALM
22:40	3.5	-	CALM
22:50	3.4	south-southeast	0.8
23:00	3.6	southeast	0.7
23:10	3.5	east	0.9
23:20	3.7	east	0.9
23:30	3.6	east-southeast	0.9
23:40	3.7	-	CALM
23:50	3.4	-	CALM