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

○Information

○Measurement value list ： 2025/09/05(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	north	2.2
00:10	3.6	north-northwest	2.4
00:20	3.7	northwest	2.5
00:30	3.6	north-northwest	2.4
00:40	3.7	northwest	2.5
00:50	3.5	northwest	2.1
01:00	3.6	northwest	2.7
01:10	3.7	northwest	2.9
01:20	3.6	northwest	2.9
01:30	3.7	northwest	2.3
01:40	3.3	northwest	2.6
01:50	3.6	northwest	2.7
02:00	3.3	northwest	3.4
02:10	3.6	northwest	3.4
02:20	3.6	northwest	3.4
02:30	3.6	northwest	3.3
02:40	3.6	north-northwest	2.8
02:50	3.5	north-northwest	2.4
03:00	3.7	north-northwest	2.9
03:10	3.6	north-northwest	2.7
03:20	3.7	north-northwest	1.9
03:30	3.5	north-northwest	1.7
03:40	3.7	northwest	1.5
03:50	3.6	west-northwest	1.3
04:00	3.7	west	0.7
04:10	3.6	southwest	0.6
04:20	3.6	south	1.3
04:30	3.6	south-southwest	2.7
04:40	3.6	south	2.7
04:50	3.5	south-southeast	1.8
05:00	3.5	south-southeast	1.5
05:10	3.4	south-southeast	1.2
05:20	3.5	south	1.5
05:30	3.6	south	2.2
05:40	3.5	south	2.8
05:50	3.5	south	2.8
06:00	3.6	south	2.0
06:10	3.5	south	1.5
06:20	3.7	south-southeast	1.4
06:30	3.6	southeast	1.2
06:40	3.5	southeast	1.5
06:50	3.5	south-southeast	1.8
07:00	3.6	south-southeast	1.3
07:10	3.6	south	1.2
07:20	3.5	south-southeast	1.0
07:30	3.5	south-southeast	1.4
07:40	3.5	southeast	1.3
07:50	3.6	south-southeast	1.1
08:00	3.7	south-southeast	1.2
08:10	3.4	south-southeast	1.5
08:20	3.7	south	1.6
08:30	3.7	south-southeast	1.3
08:40	3.6	south-southeast	1.4
08:50	3.6	south-southeast	1.2
09:00	3.6	south-southeast	1.5
09:10	3.6	south-southeast	1.7
09:20	3.6	south-southeast	1.4
09:30	3.6	south-southeast	1.1
09:40	3.6	southeast	1.8
09:50	3.6	south-southeast	2.5
10:00	3.6	south-southeast	3.6
10:10	3.7	south-southeast	3.8
10:20	3.6	south	3.8
10:30	3.5	south-southeast	4.1
10:40	3.6	south-southeast	4.6
10:50	3.7	south-southeast	4.7
11:00	3.6	south	5.0
11:10	3.5	south	7.2
11:20	3.6	south	6.7
11:30	3.6	south-southeast	6.6
11:40	3.6	south	6.6
11:50	3.6	south	3.8
12:00	3.6	south-southwest	2.1
12:10	3.6	-	-
12:20	3.6	south	0.6
12:30	3.5	southeast	1.4
12:40	3.5	south	3.0
12:50	3.6	south	3.5
13:00	3.4	south-southeast	3.5
13:10	3.7	south-southeast	2.8
13:20	3.5	-	-
13:30	3.6	south-southeast	2.8
13:40	3.6	southeast	2.3
13:50	3.5	southeast	2.4
14:00	3.6	south-southeast	2.3
14:10	3.7	south-southeast	2.8
14:20	3.7	southeast	2.5
14:30	3.6	southeast	3.2
14:40	3.7	south-southeast	1.6
14:50	3.5	south-southeast	0.9
15:00	3.5	-	CALM
15:10	3.6	-	CALM
15:20	3.6	northwest	0.6
15:30	3.6	east-northeast	2.2
15:40	3.7	east-southeast	1.8
15:50	3.5	north	1.0
16:00	3.6	north-northwest	2.3
16:10	3.6	north	3.4
16:20	3.6	north-northwest	2.8
16:30	3.5	north-northwest	2.7
16:40	3.6	north-northwest	2.8
16:50	3.6	north	4.0
17:00	3.6	north-northwest	2.9
17:10	3.6	north	3.6
17:20	3.6	north	4.2
17:30	3.7	north	5.1
17:40	3.7	north	5.3
17:50	3.7	north	5.8
18:00	3.6	north	5.3
18:10	3.8	north	4.4
18:20	3.7	north	5.5
18:30	3.5	north	5.5
18:40	3.5	north-northwest	5.0
18:50	3.5	north-northwest	6.1
19:00	3.7	north-northwest	6.2
19:10	3.4	north-northwest	6.9
19:20	3.6	north-northwest	7.3
19:30	3.6	northwest	7.6
19:40	3.7	northwest	7.9
19:50	3.7	northwest	6.9
20:00	3.6	north-northwest	6.8
20:10	3.7	north-northwest	6.8
20:20	3.5	north-northwest	7.0
20:30	3.7	northwest	6.6
20:40	3.6	north-northwest	6.1
20:50	3.6	north-northwest	7.4
21:00	3.6	north-northwest	6.6
21:10	3.6	north-northwest	7.9
21:20	3.4	northwest	8.1
21:30	3.5	northwest	8.4
21:40	3.7	northwest	8.0
21:50	3.6	northwest	8.0
22:00	3.6	northwest	8.2
22:10	3.6	north-northwest	8.3
22:20	3.6	northwest	8.5
22:30	3.6	north-northwest	8.9
22:40	3.4	northwest	8.5
22:50	3.5	northwest	8.8
23:00	3.6	northwest	7.4
23:10	3.6	north-northwest	7.9
23:20	3.6	northwest	7.3
23:30	3.5	northwest	7.9
23:40	3.6	northwest	7.8
23:50	3.7	northwest	8.1