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

○Information

○Measurement value list ： 2026/04/25(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	3.6	northwest	4.0
00:10	3.6	northwest	3.6
00:20	3.4	northwest	3.9
00:30	3.5	northwest	4.1
00:40	3.7	northwest	3.9
00:50	3.5	northwest	3.6
01:00	3.5	northwest	3.7
01:10	3.7	northwest	3.4
01:20	3.6	northwest	3.6
01:30	3.5	northwest	3.1
01:40	3.6	northwest	3.4
01:50	3.5	northwest	3.6
02:00	3.6	northwest	3.8
02:10	3.6	northwest	3.9
02:20	3.5	north-northwest	3.5
02:30	3.6	north-northwest	3.4
02:40	3.5	northwest	3.5
02:50	3.6	northwest	3.4
03:00	3.7	northwest	3.4
03:10	3.6	north-northwest	3.7
03:20	3.6	northwest	3.7
03:30	3.6	northwest	3.6
03:40	3.5	northwest	4.1
03:50	3.5	northwest	4.0
04:00	3.6	north-northwest	4.1
04:10	3.6	north-northwest	4.0
04:20	3.5	northwest	4.0
04:30	3.5	northwest	3.9
04:40	3.6	northwest	3.8
04:50	3.6	northwest	3.4
05:00	3.5	northwest	3.5
05:10	3.6	northwest	3.9
05:20	3.6	northwest	4.2
05:30	3.5	northwest	4.1
05:40	3.5	northwest	3.8
05:50	3.4	west-northwest	3.6
06:00	3.6	northwest	3.4
06:10	3.5	west-northwest	3.4
06:20	3.6	northwest	2.8
06:30	3.6	northwest	2.5
06:40	3.5	northwest	2.4
06:50	3.7	northwest	2.2
07:00	3.5	northwest	1.7
07:10	3.5	north-northwest	2.3
07:20	3.6	north-northwest	2.5
07:30	3.5	north	2.5
07:40	3.6	north-northwest	3.0
07:50	3.6	northeast	3.5
08:00	3.7	northeast	3.2
08:10	3.4	north-northeast	3.3
08:20	3.4	north-northeast	2.8
08:30	3.6	northeast	2.6
08:40	3.5	north-northeast	2.8
08:50	3.6	north-northeast	3.3
09:00	3.6	north-northeast	2.9
09:10	3.4	north-northeast	2.5
09:20	3.4	northeast	4.3
09:30	3.5	northeast	3.7
09:40	3.6	northeast	3.7
09:50	3.6	northeast	4.0
10:00	3.4	east-northeast	4.2
10:10	3.6	east-northeast	5.4
10:20	3.7	east-northeast	4.5
10:30	3.6	east-northeast	5.3
10:40	3.6	east-northeast	5.1
10:50	3.7	east-northeast	4.3
11:00	3.4	east-northeast	4.9
11:10	3.6	northeast	4.5
11:20	3.7	east-northeast	4.0
11:30	3.5	east	5.5
11:40	3.5	east-northeast	5.0
11:50	3.4	east-northeast	5.4
12:00	3.5	east-northeast	4.8
12:10	3.6	east-northeast	5.7
12:20	3.6	east-northeast	4.6
12:30	3.6	east-northeast	3.8
12:40	3.6	east-southeast	4.0
12:50	3.6	east-northeast	4.1
13:00	3.7	east	3.9
13:10	3.5	east	4.2
13:20	3.5	east	4.0
13:30	3.5	east	3.9
13:40	3.6	east-southeast	4.0
13:50	3.4	east-southeast	4.7
14:00	3.6	east-southeast	4.2
14:10	3.6	east	5.3
14:20	3.6	east-southeast	4.4
14:30	3.6	east-southeast	4.6
14:40	3.4	east	4.5
14:50	3.6	east	4.4
15:00	3.8	east-southeast	4.8
15:10	3.6	east	4.5
15:20	3.7	east-southeast	3.9
15:30	3.5	southeast	3.3
15:40	3.4	southeast	3.6
15:50	3.6	southeast	4.4
16:00	3.4	south-southeast	3.9
16:10	3.6	southeast	3.8
16:20	3.7	southeast	4.9
16:30	3.6	southeast	4.0
16:40	3.7	east-southeast	4.9
16:50	3.6	southeast	4.2
17:00	3.6	southeast	4.3
17:10	3.5	southeast	3.7
17:20	3.6	southeast	4.9
17:30	3.7	southeast	4.0
17:40	3.6	southeast	3.2
17:50	3.6	south-southeast	3.7
18:00	3.7	south-southeast	4.0
18:10	3.6	south-southeast	5.2
18:20	3.6	south-southeast	5.0
18:30	3.5	south-southeast	4.6
18:40	3.5	south-southeast	5.2
18:50	3.5	south-southeast	5.1
19:00	3.5	south-southeast	5.2
19:10	3.4	south-southeast	4.9
19:20	3.8	south-southeast	4.5
19:30	3.7	south-southeast	3.7
19:40	3.6	south	3.5
19:50	3.7	south	3.3
20:00	3.4	south	3.8
20:10	3.7	south	4.0
20:20	3.6	south	3.7
20:30	3.5	south	3.8
20:40	3.6	south	4.3
20:50	3.5	south	4.0
21:00	3.5	south-southwest	4.0
21:10	3.7	south	4.8
21:20	3.5	south	5.4
21:30	3.5	south	5.2
21:40	3.7	south	5.0
21:50	3.6	south	4.9
22:00	3.7	south	4.9
22:10	3.6	south	5.0
22:20	3.6	south	5.2
22:30	3.5	south	5.1
22:40	3.5	south	5.7
22:50	3.5	south	6.1
23:00	3.5	south-southwest	5.7
23:10	3.7	south	5.9
23:20	3.5	south	5.2
23:30	3.6	south-southwest	4.9
23:40	3.6	south-southwest	4.9
23:50	3.6	south-southwest	4.7