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

○Information

○Measurement value list ： 2025/07/21(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	0.9
00:10	3.5	south-southwest	0.6
00:20	3.8	west-southwest	1.2
00:30	3.6	-	CALM
00:40	3.6	-	CALM
00:50	3.5	-	CALM
01:00	3.5	north-northeast	0.7
01:10	3.5	northeast	1.0
01:20	3.7	northeast	1.8
01:30	3.6	northeast	1.3
01:40	3.4	east-northeast	1.6
01:50	3.7	northeast	1.8
02:00	3.6	northeast	1.1
02:10	3.7	east	1.2
02:20	3.5	east-southeast	1.1
02:30	3.6	east-southeast	1.8
02:40	3.7	east-southeast	2.1
02:50	3.6	southeast	1.6
03:00	3.5	south	1.2
03:10	3.8	southwest	0.9
03:20	3.7	south	0.6
03:30	3.5	-	CALM
03:40	3.6	west-southwest	0.8
03:50	3.4	west	1.1
04:00	3.6	southwest	0.8
04:10	3.6	southwest	1.0
04:20	3.4	south-southwest	1.0
04:30	3.6	southwest	1.5
04:40	3.7	south-southwest	2.1
04:50	3.5	south-southwest	1.8
05:00	3.5	south-southwest	1.7
05:10	3.5	south-southwest	1.8
05:20	3.4	south-southwest	0.8
05:30	3.7	southwest	0.8
05:40	3.6	southwest	0.6
05:50	3.5	-	CALM
06:00	3.5	-	CALM
06:10	3.6	west-northwest	0.8
06:20	3.6	west	1.2
06:30	3.6	-	CALM
06:40	3.6	-	CALM
06:50	3.6	north-northeast	0.7
07:00	3.7	north-northwest	0.9
07:10	3.5	north	1.0
07:20	3.6	west-northwest	1.1
07:30	3.7	north	0.8
07:40	3.5	-	CALM
07:50	3.4	northeast	0.8
08:00	3.7	east-northeast	0.8
08:10	3.5	northeast	0.8
08:20	3.4	east-northeast	1.3
08:30	3.5	east	1.5
08:40	3.6	east-southeast	1.3
08:50	3.6	east	1.1
09:00	3.6	east-southeast	1.3
09:10	3.7	east	1.7
09:20	3.6	east-southeast	1.9
09:30	3.6	east	1.5
09:40	3.6	east	1.2
09:50	3.5	southeast	1.3
10:00	3.5	southeast	0.9
10:10	3.6	southeast	1.6
10:20	3.6	east-southeast	2.2
10:30	3.5	east-southeast	2.2
10:40	3.6	east-southeast	2.6
10:50	3.6	southeast	2.5
11:00	3.4	southeast	2.9
11:10	3.5	southeast	3.0
11:20	3.6	southeast	3.1
11:30	3.5	southeast	3.1
11:40	3.6	southeast	3.4
11:50	3.6	south-southeast	3.8
12:00	3.8	south-southeast	3.4
12:10	3.7	south-southeast	3.5
12:20	3.5	south-southeast	3.6
12:30	3.6	south-southeast	4.0
12:40	3.4	southeast	3.1
12:50	3.7	south-southeast	3.7
13:00	3.5	southeast	3.7
13:10	3.5	southeast	3.3
13:20	3.6	southeast	4.1
13:30	3.4	south-southeast	4.4
13:40	3.5	south-southeast	3.7
13:50	3.5	south-southeast	3.2
14:00	3.5	south-southeast	3.5
14:10	3.6	southeast	3.1
14:20	3.5	southeast	3.5
14:30	3.6	southeast	3.9
14:40	3.7	southeast	3.4
14:50	3.5	south	3.9
15:00	3.5	south-southeast	3.1
15:10	3.6	south-southeast	3.7
15:20	3.5	south-southeast	3.5
15:30	3.5	south	3.7
15:40	3.5	south-southeast	3.5
15:50	3.4	south	2.9
16:00	3.4	south	2.3
16:10	3.4	south	3.1
16:20	3.4	south	3.2
16:30	3.6	south	2.2
16:40	3.4	south-southwest	2.2
16:50	3.6	south	2.8
17:00	3.5	south	3.0
17:10	3.7	south-southwest	3.1
17:20	3.5	south-southwest	2.8
17:30	3.6	south-southwest	3.0
17:40	3.6	south-southwest	3.6
17:50	3.5	south-southwest	3.6
18:00	3.6	south	4.5
18:10	3.7	south	4.3
18:20	3.5	south	2.7
18:30	3.5	south	2.4
18:40	3.5	south-southwest	1.4
18:50	3.5	south	1.3
19:00	3.6	southwest	1.9
19:10	3.6	southwest	1.7
19:20	3.5	west-southwest	1.3
19:30	3.7	west	2.0
19:40	3.5	west-northwest	2.3
19:50	3.6	north-northwest	1.4
20:00	3.5	west-southwest	2.2
20:10	3.6	south-southwest	1.8
20:20	3.5	southwest	1.4
20:30	3.5	south	1.7
20:40	3.6	south-southwest	2.5
20:50	3.6	southwest	2.1
21:00	3.7	south-southwest	2.1
21:10	3.5	southwest	2.7
21:20	3.6	southwest	2.6
21:30	3.6	southwest	1.7
21:40	3.6	south-southwest	1.5
21:50	3.5	south-southwest	1.5
22:00	3.5	southwest	2.5
22:10	3.5	southwest	3.0
22:20	3.5	southwest	2.8
22:30	3.5	southwest	2.3
22:40	3.6	southwest	2.5
22:50	3.5	west-southwest	1.9
23:00	3.4	southwest	2.2
23:10	3.5	southwest	1.6
23:20	3.5	southwest	1.7
23:30	3.7	southwest	0.9
23:40	3.5	south	1.1
23:50	3.5	south-southeast	0.6