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

○Information

○Measurement value list ： 2026/04/18(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	3.6	south	5.7
00:10	3.5	south	6.3
00:20	3.5	south	5.6
00:30	3.5	south	5.9
00:40	3.5	south	6.1
00:50	3.6	south	6.0
01:00	3.6	south	6.2
01:10	3.5	south	6.1
01:20	3.6	south	5.9
01:30	3.5	south	6.6
01:40	3.5	south	5.6
01:50	3.6	south	4.5
02:00	3.6	south	4.5
02:10	3.7	south	4.6
02:20	3.7	south	4.4
02:30	3.6	south	4.8
02:40	3.6	south	4.9
02:50	3.6	south	4.3
03:00	3.6	south-southeast	3.8
03:10	3.6	south	4.2
03:20	3.6	south	4.8
03:30	3.5	south	4.0
03:40	3.5	south	3.0
03:50	3.6	south	3.6
04:00	3.4	south	3.6
04:10	3.5	south	3.1
04:20	3.6	south	2.7
04:30	3.7	south	2.2
04:40	3.7	south	2.7
04:50	3.6	south-southeast	1.5
05:00	3.7	south-southeast	1.8
05:10	3.6	south-southeast	2.4
05:20	3.5	south-southeast	2.0
05:30	3.7	southeast	0.7
05:40	3.5	southeast	1.2
05:50	3.6	east-southeast	0.8
06:00	3.6	-	CALM
06:10	3.6	-	CALM
06:20	3.6	-	CALM
06:30	3.6	southwest	0.7
06:40	3.6	southwest	0.7
06:50	3.6	south-southwest	1.1
07:00	3.4	south-southwest	1.2
07:10	3.5	south	1.8
07:20	3.7	south	2.6
07:30	3.5	south	2.9
07:40	3.8	south	3.2
07:50	3.6	south	3.7
08:00	3.6	south-southeast	1.9
08:10	3.5	southeast	1.6
08:20	3.6	southeast	1.4
08:30	3.7	southeast	2.3
08:40	3.5	southeast	3.2
08:50	3.5	southeast	3.8
09:00	3.6	southeast	3.3
09:10	3.8	southeast	4.4
09:20	3.7	southeast	6.3
09:30	3.6	southeast	5.5
09:40	3.6	south-southeast	6.4
09:50	3.5	south-southeast	7.2
10:00	3.7	south-southeast	8.3
10:10	3.6	south-southeast	8.1
10:20	3.5	south-southeast	9.2
10:30	3.6	south-southeast	8.8
10:40	3.7	south-southeast	9.8
10:50	3.6	south-southeast	8.8
11:00	3.5	south-southeast	7.8
11:10	3.5	south-southeast	10.4
11:20	3.5	south	10.8
11:30	3.5	south-southeast	10.1
11:40	3.7	south-southeast	11.6
11:50	3.6	south-southeast	10.1
12:00	3.6	south-southeast	10.9
12:10	3.5	south-southeast	10.2
12:20	3.6	south-southeast	10.9
12:30	3.4	south-southeast	10.3
12:40	3.6	south-southeast	11.6
12:50	3.6	south-southeast	10.3
13:00	3.6	south-southeast	11.0
13:10	3.6	south-southeast	9.9
13:20	3.5	south	9.7
13:30	3.6	south	9.1
13:40	3.6	south-southeast	8.1
13:50	3.6	south-southeast	8.7
14:00	3.5	south-southeast	8.0
14:10	3.6	south	9.2
14:20	3.5	south	8.4
14:30	3.6	south	8.4
14:40	3.6	south	7.7
14:50	3.7	south	8.0
15:00	3.6	south	8.2
15:10	3.7	south	7.3
15:20	3.8	south	6.5
15:30	3.7	south	5.4
15:40	3.7	south	3.7
15:50	3.9	south	4.2
16:00	3.6	south	3.6
16:10	3.5	south	3.7
16:20	3.7	south	4.5
16:30	3.5	south	5.1
16:40	3.6	south	3.2
16:50	3.6	south	3.7
17:00	3.5	south	3.6
17:10	3.7	south	2.9
17:20	3.6	south	3.2
17:30	3.7	south	2.2
17:40	3.7	south-southeast	2.4
17:50	3.6	south	3.0
18:00	3.5	south	3.9
18:10	3.7	south-southwest	3.0
18:20	3.6	south	3.2
18:30	3.7	northeast	0.6
18:40	3.7	north-northwest	1.8
18:50	3.6	northwest	1.9
19:00	3.5	north	3.0
19:10	3.7	north	2.8
19:20	3.6	north-northeast	2.8
19:30	3.7	north	2.1
19:40	3.5	north	2.0
19:50	3.7	north-northeast	1.7
20:00	3.6	north-northeast	2.8
20:10	3.5	north-northeast	2.6
20:20	3.5	north-northeast	1.5
20:30	3.7	northeast	0.6
20:40	3.5	east-northeast	1.2
20:50	3.6	east-northeast	1.7
21:00	3.7	northeast	1.6
21:10	3.6	-	CALM
21:20	3.6	east-northeast	1.3
21:30	3.6	east-northeast	1.3
21:40	3.6	east-northeast	0.6
21:50	3.5	southeast	0.7
22:00	3.6	-	CALM
22:10	3.5	southeast	1.0
22:20	3.6	west-southwest	0.8
22:30	3.5	west	1.8
22:40	3.5	west	1.9
22:50	3.6	west-northwest	3.0
23:00	3.5	west	4.5
23:10	3.5	west	2.4
23:20	3.7	west-northwest	0.8
23:30	3.8	-	CALM
23:40	3.6	west-southwest	0.8
23:50	3.5	west-southwest	1.1