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

○Information

○Measurement value list ： 2025/10/25(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	3.5	southwest	1.4
00:10	3.6	west-southwest	1.5
00:20	3.6	west-northwest	0.6
00:30	3.6	northwest	0.7
00:40	3.6	northwest	0.7
00:50	3.5	west-northwest	2.0
01:00	3.6	west-northwest	3.1
01:10	3.7	west-northwest	3.2
01:20	3.7	northwest	3.8
01:30	3.8	northwest	4.2
01:40	3.4	northwest	3.4
01:50	3.6	northwest	3.6
02:00	3.6	northwest	3.8
02:10	3.5	north-northwest	4.1
02:20	3.6	north-northwest	4.4
02:30	3.5	north-northwest	4.9
02:40	3.4	northwest	4.7
02:50	3.7	northwest	4.5
03:00	3.5	northwest	4.6
03:10	3.6	northwest	4.0
03:20	3.7	northwest	4.1
03:30	3.5	north-northwest	4.5
03:40	3.5	north-northwest	4.5
03:50	3.9	north-northwest	4.1
04:00	3.6	north-northwest	4.8
04:10	3.6	northwest	4.4
04:20	3.4	northwest	4.7
04:30	3.5	northwest	4.6
04:40	3.7	northwest	4.2
04:50	3.4	northwest	3.7
05:00	3.5	northwest	3.8
05:10	3.6	northwest	3.7
05:20	3.4	northwest	3.7
05:30	3.5	northwest	3.3
05:40	3.6	north-northwest	3.6
05:50	3.4	north-northwest	5.0
06:00	3.5	north-northwest	5.7
06:10	3.5	north-northwest	4.9
06:20	3.5	northwest	4.0
06:30	3.3	northwest	4.2
06:40	3.5	northwest	4.8
06:50	3.6	northwest	5.6
07:00	3.6	northwest	5.1
07:10	3.7	northwest	5.5
07:20	3.5	northwest	4.8
07:30	3.5	northwest	5.2
07:40	3.6	northwest	4.9
07:50	3.5	northwest	4.6
08:00	3.8	northwest	4.3
08:10	3.6	northwest	4.2
08:20	3.6	northwest	4.4
08:30	3.4	northwest	4.3
08:40	3.5	northwest	4.3
08:50	3.5	northwest	3.7
09:00	3.6	northwest	2.9
09:10	3.5	north-northwest	2.3
09:20	3.6	northwest	2.6
09:30	3.7	north-northwest	2.8
09:40	3.5	north-northwest	2.1
09:50	3.6	north-northwest	2.9
10:00	3.6	northwest	2.1
10:10	3.6	northwest	2.4
10:20	3.6	northwest	2.5
10:30	3.4	northwest	2.7
10:40	3.6	west-northwest	1.9
10:50	3.6	north-northwest	1.9
11:00	3.7	north-northwest	2.2
11:10	3.6	northwest	1.6
11:20	3.4	northwest	1.8
11:30	3.7	-	CALM
11:40	3.6	-	CALM
11:50	3.5	-	-
12:00	3.6	northwest	1.2
12:10	3.6	west-northwest	1.1
12:20	3.7	northwest	0.9
12:30	3.6	northwest	1.4
12:40	3.6	northwest	1.0
12:50	3.5	northwest	1.3
13:00	3.5	north-northwest	1.0
13:10	3.5	north-northwest	1.0
13:20	3.7	north-northwest	0.9
13:30	3.6	north-northwest	0.9
13:40	3.6	northwest	1.2
13:50	3.6	northwest	1.0
14:00	3.6	north-northwest	1.5
14:10	3.7	north-northwest	1.8
14:20	3.6	north-northwest	2.7
14:30	3.8	northwest	2.4
14:40	3.5	northwest	2.2
14:50	3.8	northwest	2.8
15:00	3.5	north-northwest	2.6
15:10	3.5	northwest	1.5
15:20	3.6	northwest	2.4
15:30	3.6	north	1.4
15:40	3.5	northwest	1.9
15:50	3.5	northwest	2.2
16:00	3.5	west-northwest	2.5
16:10	3.6	northwest	2.3
16:20	3.7	west-northwest	2.4
16:30	3.5	northwest	2.8
16:40	3.4	northwest	2.8
16:50	3.5	northwest	3.4
17:00	3.5	northwest	3.2
17:10	3.5	northwest	3.3
17:20	3.5	northwest	3.7
17:30	3.5	north-northwest	4.7
17:40	3.5	northwest	4.5
17:50	3.4	northwest	4.1
18:00	3.6	northwest	3.5
18:10	3.5	northwest	3.6
18:20	3.6	northwest	4.4
18:30	3.5	northwest	4.2
18:40	3.6	northwest	4.1
18:50	3.5	northwest	4.2
19:00	3.6	northwest	4.0
19:10	3.4	northwest	4.0
19:20	3.6	northwest	3.8
19:30	3.5	northwest	4.7
19:40	3.5	northwest	5.1
19:50	3.7	northwest	5.1
20:00	3.6	northwest	5.4
20:10	3.7	northwest	6.0
20:20	3.5	northwest	6.3
20:30	3.5	northwest	7.0
20:40	3.4	northwest	7.5
20:50	3.6	northwest	6.7
21:00	3.6	northwest	5.5
21:10	3.7	northwest	6.1
21:20	3.7	northwest	5.9
21:30	3.5	northwest	6.5
21:40	3.4	northwest	5.4
21:50	3.7	northwest	5.6
22:00	3.7	northwest	6.2
22:10	3.6	northwest	6.2
22:20	3.6	west-northwest	6.3
22:30	3.7	northwest	6.7
22:40	3.5	northwest	6.5
22:50	3.6	northwest	5.8
23:00	3.5	northwest	5.3
23:10	3.6	northwest	5.9
23:20	3.6	northwest	6.1
23:30	3.5	northwest	6.8
23:40	3.5	northwest	6.4
23:50	3.7	northwest	6.0