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

○Information

○Measurement value list ： 2026/04/20(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-northwest	0.6
00:10	3.7	northwest	0.9
00:20	3.5	northwest	1.7
00:30	3.6	north-northwest	2.0
00:40	3.6	north-northwest	2.7
00:50	3.4	northwest	3.0
01:00	3.5	northwest	2.4
01:10	3.5	north-northwest	2.7
01:20	3.6	north-northwest	3.5
01:30	3.5	northwest	2.4
01:40	3.5	north-northwest	3.2
01:50	3.5	north-northwest	3.5
02:00	3.6	north-northwest	4.6
02:10	3.5	north-northwest	4.4
02:20	3.5	north-northwest	4.3
02:30	3.5	north-northwest	4.9
02:40	3.7	north-northwest	4.6
02:50	3.6	north-northwest	3.9
03:00	3.5	north-northwest	4.4
03:10	3.5	north-northwest	4.1
03:20	3.6	north-northwest	4.5
03:30	3.6	north-northwest	4.7
03:40	3.6	north-northwest	4.8
03:50	3.7	north-northwest	5.5
04:00	3.6	north-northwest	5.0
04:10	3.7	north-northwest	5.3
04:20	3.5	north-northwest	4.7
04:30	3.7	north-northwest	4.8
04:40	3.5	northwest	4.9
04:50	3.5	north-northwest	5.0
05:00	3.6	north-northwest	5.0
05:10	3.4	north-northwest	5.4
05:20	3.6	north-northwest	5.4
05:30	3.6	north-northwest	5.1
05:40	3.5	northwest	5.2
05:50	3.6	northwest	5.2
06:00	3.4	northwest	4.8
06:10	3.5	northwest	4.6
06:20	3.6	northwest	3.5
06:30	3.5	northwest	3.2
06:40	3.4	northwest	3.4
06:50	3.7	northwest	2.7
07:00	3.7	west-northwest	2.5
07:10	3.7	west-northwest	1.9
07:20	3.6	northwest	1.4
07:30	3.6	northwest	1.1
07:40	3.6	north	0.7
07:50	3.6	north	1.3
08:00	3.5	northeast	1.3
08:10	3.5	east-northeast	1.1
08:20	3.6	northeast	1.1
08:30	3.6	northeast	1.9
08:40	3.7	northeast	2.2
08:50	3.5	northeast	1.8
09:00	3.6	northeast	1.7
09:10	3.6	east-northeast	2.3
09:20	3.5	east-northeast	2.0
09:30	3.6	east-northeast	2.0
09:40	3.7	northeast	2.9
09:50	3.6	northeast	2.5
10:00	3.6	northeast	3.0
10:10	3.7	northeast	3.4
10:20	3.4	northeast	3.1
10:30	3.6	northeast	2.8
10:40	3.5	northeast	2.3
10:50	3.6	northeast	2.9
11:00	3.5	northeast	3.5
11:10	3.7	east-northeast	3.8
11:20	3.6	east-northeast	2.7
11:30	3.5	east-northeast	2.5
11:40	3.7	east-northeast	2.7
11:50	3.7	east-northeast	2.8
12:00	3.6	east	2.6
12:10	3.5	east-northeast	2.8
12:20	3.6	east	2.6
12:30	3.5	east	2.9
12:40	3.6	southeast	3.9
12:50	3.7	southeast	3.7
13:00	3.6	southeast	5.7
13:10	3.5	south-southeast	7.3
13:20	3.6	south-southeast	6.9
13:30	3.5	south-southeast	5.7
13:40	3.7	southeast	6.8
13:50	3.5	south-southeast	6.5
14:00	3.6	south-southeast	6.6
14:10	3.6	southeast	7.3
14:20	3.6	south-southeast	9.6
14:30	3.6	south-southeast	8.8
14:40	3.6	south-southeast	9.0
14:50	3.5	southeast	8.8
15:00	3.5	south-southeast	8.1
15:10	3.6	south-southeast	8.8
15:20	3.4	south-southeast	8.6
15:30	3.7	south-southeast	9.1
15:40	3.5	south-southeast	10.4
15:50	3.5	south-southeast	9.7
16:00	3.6	south-southeast	9.7
16:10	3.7	south-southeast	8.6
16:20	3.6	south-southeast	10.3
16:30	3.5	south-southeast	10.0
16:40	3.6	south-southeast	9.8
16:50	3.6	south-southeast	8.5
17:00	3.6	south-southeast	7.5
17:10	3.5	south-southeast	7.8
17:20	3.6	south-southeast	8.5
17:30	3.6	south-southeast	9.3
17:40	3.6	south-southeast	8.9
17:50	3.6	south-southeast	8.2
18:00	3.6	south-southeast	7.8
18:10	3.5	south-southeast	6.8
18:20	3.5	south	7.5
18:30	3.7	south-southeast	6.6
18:40	3.6	south-southeast	6.8
18:50	3.7	south-southeast	7.8
19:00	3.5	south-southeast	7.2
19:10	3.5	south-southeast	7.0
19:20	3.6	south	8.2
19:30	3.6	south-southeast	7.3
19:40	3.5	south	7.1
19:50	3.6	south	7.8
20:00	3.7	south	6.7
20:10	3.7	south	6.2
20:20	3.7	south	5.8
20:30	3.5	south	6.3
20:40	3.5	south	6.1
20:50	3.5	south	6.3
21:00	3.6	south	7.0
21:10	3.6	south	8.0
21:20	3.5	south	6.1
21:30	3.6	south-southeast	6.4
21:40	3.5	south	6.9
21:50	3.7	south	7.1
22:00	3.6	south	7.3
22:10	3.7	south	6.6
22:20	3.7	south-southwest	7.2
22:30	3.5	south	6.4
22:40	3.8	south	5.5
22:50	3.7	south	6.0
23:00	3.6	south	7.0
23:10	3.5	south	6.8
23:20	3.5	south	7.2
23:30	3.6	south	7.6
23:40	3.7	south	6.8
23:50	3.5	south-southeast	6.1