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

○Information

○Measurement value list ： 2026/10/18(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	3.4	north-northwest	5.4
00:10	3.6	north-northwest	5.2
00:20	3.6	north-northwest	4.7
00:30	3.4	north-northwest	4.0
00:40	3.5	north-northwest	5.8
00:50	3.6	north-northwest	5.4
01:00	3.5	northwest	5.2
01:10	3.7	northwest	4.7
01:20	3.4	northwest	4.1
01:30	3.5	northwest	4.9
01:40	3.6	northwest	4.9
01:50	3.6	northwest	5.1
02:00	3.4	west-northwest	4.2
02:10	3.6	west-northwest	3.1
02:20	3.6	west-northwest	2.5
02:30	3.5	west-northwest	2.2
02:40	3.5	west-northwest	2.1
02:50	3.4	west	1.5
03:00	3.5	west	2.3
03:10	3.4	west	2.4
03:20	3.5	west-southwest	3.2
03:30	3.5	west	1.8
03:40	3.4	west	3.1
03:50	3.5	west	3.2
04:00	3.4	west	2.7
04:10	3.3	west	2.3
04:20	3.5	west	2.0
04:30	3.6	west	2.3
04:40	3.4	west	2.3
04:50	3.4	west	1.9
05:00	3.5	west-southwest	2.8
05:10	3.6	west-southwest	2.4
05:20	3.4	west-northwest	1.7
05:30	3.5	west	1.5
05:40	3.7	northwest	1.7
05:50	3.6	north-northwest	2.2
06:00	3.4	west-northwest	2.1
06:10	3.5	north-northwest	2.2
06:20	3.4	northwest	1.7
06:30	3.3	west-northwest	2.4
06:40	3.5	west	2.3
06:50	3.4	west-northwest	2.0
07:00	3.5	west	2.4
07:10	3.4	west	1.1
07:20	3.5	west	1.0
07:30	3.4	southwest	0.8
07:40	3.5	west-southwest	0.9
07:50	3.5	-	CALM
08:00	3.6	-	CALM
08:10	3.4	-	CALM
08:20	3.5	-	CALM
08:30	3.5	south	1.2
08:40	3.5	south-southeast	1.6
08:50	3.6	south-southeast	1.6
09:00	3.6	south-southeast	1.9
09:10	3.5	south-southeast	1.6
09:20	3.5	south-southeast	1.3
09:30	3.5	east-southeast	1.9
09:40	3.5	east-southeast	2.5
09:50	3.3	south-southeast	2.9
10:00	3.5	east-southeast	2.4
10:10	3.5	east-southeast	3.1
10:20	3.6	east-southeast	3.4
10:30	3.5	east-southeast	3.7
10:40	3.5	east-southeast	3.6
10:50	3.4	east	4.2
11:00	3.4	east-southeast	3.6
11:10	3.6	east-southeast	4.1
11:20	3.5	east-southeast	3.5
11:30	3.5	east-southeast	4.0
11:40	3.5	east-southeast	4.1
11:50	3.4	east-southeast	4.5
12:00	3.5	southeast	4.3
12:10	3.5	east-southeast	5.0
12:20	3.5	east-southeast	4.5
12:30	3.5	southeast	4.0
12:40	3.3	east-southeast	5.5
12:50	3.4	east-southeast	4.4
13:00	3.4	southeast	3.9
13:10	3.4	southeast	4.5
13:20	3.6	southeast	5.0
13:30	3.5	southeast	4.1
13:40	3.5	southeast	4.7
13:50	3.6	southeast	5.5
14:00	3.5	southeast	4.9
14:10	3.6	south-southeast	5.0
14:20	3.6	southeast	4.5
14:30	3.5	southeast	5.2
14:40	3.6	southeast	5.2
14:50	3.5	south-southeast	5.1
15:00	3.5	south-southeast	4.3
15:10	3.5	south-southeast	4.4
15:20	3.6	south-southeast	5.9
15:30	3.5	south-southeast	5.9
15:40	3.6	south-southeast	2.7
15:50	3.5	east-southeast	0.9
16:00	3.6	southeast	1.7
16:10	3.6	south	3.3
16:20	3.5	southeast	1.6
16:30	3.5	south	4.9
16:40	3.4	south	4.5
16:50	3.5	south	4.7
17:00	3.4	south	4.2
17:10	3.5	south	5.5
17:20	3.5	south	5.7
17:30	3.5	south	5.3
17:40	3.5	south	5.7
17:50	3.5	south	5.7
18:00	3.3	south	4.3
18:10	3.4	south-southwest	3.5
18:20	3.5	south-southwest	4.2
18:30	3.4	south-southwest	4.9
18:40	3.6	south-southwest	5.2
18:50	3.5	south-southwest	5.6
19:00	3.5	south-southwest	6.1
19:10	3.6	south-southwest	7.3
19:20	3.5	south	7.9
19:30	3.5	south-southwest	8.3
19:40	3.4	south	7.5
19:50	3.5	south	7.2
20:00	3.5	south-southwest	6.0
20:10	3.4	south	7.6
20:20	3.6	south	8.7
20:30	3.6	south	9.6
20:40	3.3	south	9.3
20:50	3.5	south	9.7
21:00	3.6	south	10.6
21:10	3.4	south	11.6
21:20	3.5	south	11.3
21:30	3.5	south	11.2
21:40	3.6	south	10.9
21:50	3.5	south	10.2
22:00	3.7	south	9.6
22:10	3.5	south	9.2
22:20	3.5	south	10.1
22:30	3.5	south	10.7
22:40	3.6	south	10.7
22:50	3.6	south	9.9
23:00	3.5	south	9.0
23:10	3.4	south	9.8
23:20	3.5	south	10.1
23:30	3.6	south-southeast	7.8
23:40	3.5	south	8.4
23:50	3.4	south	8.7