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

○Information

○Measurement value list ： 2026/09/23(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	west-northwest	1.8
00:10	3.5	west-northwest	2.0
00:20	3.5	west-northwest	1.7
00:30	3.4	west-northwest	1.2
00:40	3.6	west-northwest	1.4
00:50	3.5	west	2.0
01:00	3.6	west-northwest	1.4
01:10	3.6	west-northwest	1.6
01:20	3.4	west	1.5
01:30	3.5	west	1.3
01:40	3.7	west-northwest	1.3
01:50	3.7	west-northwest	1.2
02:00	3.6	west-northwest	0.9
02:10	3.5	northwest	1.2
02:20	3.6	north-northwest	1.4
02:30	3.6	west-northwest	1.1
02:40	3.6	west-northwest	1.1
02:50	3.4	northwest	1.3
03:00	3.4	northwest	0.8
03:10	3.5	north-northwest	1.8
03:20	3.5	northwest	2.2
03:30	3.5	west-northwest	2.5
03:40	3.6	west-northwest	2.0
03:50	3.6	northwest	1.8
04:00	3.7	northwest	1.7
04:10	3.7	north-northwest	2.2
04:20	3.6	north-northwest	2.6
04:30	3.7	north-northwest	3.4
04:40	3.4	northwest	2.9
04:50	3.6	northwest	3.4
05:00	3.5	west-northwest	3.9
05:10	3.5	northwest	3.3
05:20	3.7	northwest	3.0
05:30	3.5	north-northwest	2.8
05:40	3.6	north-northwest	2.9
05:50	3.6	north-northwest	2.8
06:00	3.7	northwest	2.4
06:10	3.6	northwest	2.4
06:20	3.5	northwest	2.3
06:30	3.5	north-northwest	2.5
06:40	3.4	northwest	2.2
06:50	3.6	north-northwest	2.5
07:00	3.4	north-northwest	2.1
07:10	3.7	north-northwest	2.0
07:20	3.5	north-northwest	2.0
07:30	3.5	north-northwest	2.2
07:40	3.4	north-northwest	2.4
07:50	3.6	north-northwest	2.2
08:00	3.6	north-northwest	1.5
08:10	3.6	north-northwest	1.5
08:20	3.6	north	2.1
08:30	3.5	north-northeast	1.4
08:40	3.6	north-northeast	1.7
08:50	3.6	northeast	2.6
09:00	3.6	northeast	2.2
09:10	3.6	north	3.0
09:20	3.6	north-northeast	4.1
09:30	3.6	northeast	2.6
09:40	3.6	north-northeast	2.9
09:50	3.6	northeast	3.4
10:00	3.5	northeast	3.4
10:10	3.5	north-northeast	3.2
10:20	3.5	northeast	3.2
10:30	3.4	northeast	3.0
10:40	3.5	northeast	2.4
10:50	3.6	northeast	3.3
11:00	3.6	east-northeast	4.6
11:10	3.6	northeast	4.3
11:20	3.5	east-northeast	4.4
11:30	3.7	east-northeast	3.9
11:40	3.5	east-northeast	3.8
11:50	3.6	east-northeast	3.2
12:00	3.6	northeast	3.9
12:10	3.6	east-northeast	3.3
12:20	3.5	east-northeast	3.0
12:30	3.6	east-northeast	3.0
12:40	3.6	east	3.1
12:50	3.6	east-northeast	3.9
13:00	3.6	east-northeast	3.9
13:10	3.6	east	2.9
13:20	3.5	east	3.7
13:30	3.5	east	2.2
13:40	3.5	east	2.3
13:50	3.4	east	3.1
14:00	3.5	east	3.9
14:10	3.6	east	3.6
14:20	3.6	east	3.4
14:30	3.6	east	2.5
14:40	3.4	east-southeast	2.9
14:50	3.5	east	2.7
15:00	3.6	east	2.5
15:10	3.6	southeast	1.9
15:20	3.4	south-southeast	2.2
15:30	3.6	southeast	2.2
15:40	3.5	east-southeast	2.8
15:50	3.6	southeast	2.0
16:00	3.5	south-southeast	2.3
16:10	3.5	southeast	1.5
16:20	3.6	southeast	1.9
16:30	3.5	south-southeast	1.2
16:40	3.7	south-southeast	1.3
16:50	3.5	south-southwest	0.6
17:00	3.6	south	0.6
17:10	3.5	south	0.6
17:20	3.6	south	1.0
17:30	3.6	south	0.8
17:40	3.6	south	1.0
17:50	3.6	south	0.7
18:00	3.5	south	1.0
18:10	3.6	south	1.8
18:20	3.7	southwest	1.3
18:30	3.4	south	0.9
18:40	3.5	south-southwest	0.9
18:50	3.5	south	1.2
19:00	3.6	south	1.3
19:10	3.5	south	1.5
19:20	3.5	south	2.9
19:30	3.5	south-southeast	2.0
19:40	3.5	south	2.7
19:50	3.4	south	4.8
20:00	3.6	south	5.4
20:10	3.5	south	5.5
20:20	3.5	south	5.3
20:30	3.7	south	5.2
20:40	3.5	south	5.6
20:50	3.5	south	5.2
21:00	3.5	south-southwest	5.6
21:10	3.5	south-southwest	5.4
21:20	3.5	south	4.7
21:30	3.6	south	4.1
21:40	3.7	south	4.5
21:50	3.6	south	3.7
22:00	3.5	south	3.5
22:10	3.6	south	2.4
22:20	3.5	south	1.6
22:30	3.6	south	1.4
22:40	3.5	south-southwest	2.4
22:50	3.5	south-southwest	2.8
23:00	3.4	south-southwest	2.9
23:10	3.8	south-southwest	3.4
23:20	3.6	south	3.9
23:30	3.6	south	4.5
23:40	3.7	south	4.1
23:50	3.6	south	4.6