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

○Information

○Measurement value list ： 2026/04/30(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	2.1
00:10	3.7	north	1.6
00:20	3.5	north-northeast	1.5
00:30	3.6	north	1.3
00:40	3.6	north	1.4
00:50	3.6	north	2.5
01:00	3.6	north-northwest	2.4
01:10	3.5	north-northwest	2.5
01:20	3.5	north-northwest	2.7
01:30	3.6	northwest	2.2
01:40	3.5	northwest	2.1
01:50	3.5	north-northwest	2.4
02:00	3.6	north	2.2
02:10	3.5	north	2.4
02:20	3.7	north	1.8
02:30	3.6	north	1.4
02:40	3.6	north-northwest	1.2
02:50	3.6	west-northwest	2.5
03:00	3.5	west-northwest	2.4
03:10	3.6	northwest	2.4
03:20	3.7	northwest	1.9
03:30	3.5	northwest	1.9
03:40	3.5	northwest	2.1
03:50	3.6	northwest	2.4
04:00	3.6	northwest	3.5
04:10	3.6	north-northwest	2.8
04:20	3.5	north-northwest	2.9
04:30	3.5	north-northwest	2.8
04:40	3.5	north-northwest	2.9
04:50	3.5	north-northwest	2.2
05:00	3.5	north-northwest	2.0
05:10	3.7	northwest	2.2
05:20	3.6	northwest	2.5
05:30	3.4	northwest	2.5
05:40	3.7	northwest	2.2
05:50	3.6	northwest	1.6
06:00	3.6	northwest	1.5
06:10	3.6	west-northwest	1.5
06:20	3.5	west-northwest	1.5
06:30	3.7	northwest	1.5
06:40	3.4	northwest	1.7
06:50	3.8	northwest	1.9
07:00	3.6	north-northwest	1.8
07:10	3.5	north-northwest	1.8
07:20	3.4	north-northwest	2.0
07:30	3.5	north	1.8
07:40	3.6	north	1.7
07:50	3.5	north	1.6
08:00	3.7	north-northeast	1.9
08:10	3.7	north-northeast	1.7
08:20	3.6	north-northeast	1.7
08:30	3.5	north-northeast	1.9
08:40	3.7	northeast	2.1
08:50	3.5	north-northeast	1.9
09:00	3.5	northeast	2.1
09:10	3.5	east-northeast	1.6
09:20	3.3	northeast	2.0
09:30	3.5	north-northeast	2.2
09:40	3.6	north-northeast	2.1
09:50	3.6	north	1.5
10:00	3.6	northeast	1.7
10:10	3.3	northeast	1.7
10:20	3.6	northeast	1.7
10:30	3.5	northeast	2.4
10:40	3.5	east-northeast	2.2
10:50	3.6	east	1.3
11:00	3.5	east-northeast	1.7
11:10	3.5	east-southeast	2.2
11:20	3.5	east-southeast	2.1
11:30	3.6	southeast	2.0
11:40	3.5	east-southeast	2.4
11:50	3.6	east-southeast	3.1
12:00	3.5	southeast	2.9
12:10	3.5	east-southeast	3.5
12:20	3.5	east-southeast	3.7
12:30	3.5	east-southeast	4.1
12:40	3.5	east-southeast	3.5
12:50	3.5	southeast	3.7
13:00	3.6	southeast	4.5
13:10	3.5	southeast	4.9
13:20	3.6	southeast	5.1
13:30	3.7	south-southeast	4.6
13:40	3.5	southeast	4.7
13:50	3.6	southeast	4.7
14:00	3.6	south-southeast	4.5
14:10	3.5	south	5.6
14:20	3.6	south-southeast	5.3
14:30	3.6	south-southeast	4.7
14:40	3.6	south-southeast	3.7
14:50	3.6	south-southeast	5.0
15:00	3.6	south-southeast	4.4
15:10	3.6	south-southeast	6.2
15:20	3.6	south-southeast	5.2
15:30	3.6	south-southeast	5.3
15:40	3.6	south-southeast	5.4
15:50	3.6	south-southeast	5.2
16:00	3.4	south-southeast	4.9
16:10	3.7	south-southeast	4.9
16:20	3.5	south-southeast	5.2
16:30	3.5	south-southeast	4.7
16:40	3.6	south-southeast	4.9
16:50	3.6	south-southeast	5.5
17:00	3.6	south-southeast	5.1
17:10	3.6	south-southeast	5.3
17:20	3.5	south-southeast	5.4
17:30	3.6	south-southeast	6.0
17:40	3.6	south-southeast	5.6
17:50	3.6	south-southeast	5.3
18:00	3.6	south-southeast	6.3
18:10	3.7	south	6.4
18:20	3.6	south	5.4
18:30	3.6	south-southeast	4.5
18:40	3.7	south-southeast	3.9
18:50	3.4	south	4.8
19:00	3.5	south	5.0
19:10	3.7	south	5.0
19:20	3.5	south	5.1
19:30	3.6	south	5.2
19:40	3.5	south	5.0
19:50	3.6	south	4.1
20:00	3.5	south	4.0
20:10	3.6	south	4.4
20:20	3.6	south	4.8
20:30	3.6	south	4.4
20:40	3.5	south-southwest	4.4
20:50	3.7	south	4.8
21:00	3.5	south	4.9
21:10	3.5	south-southwest	4.9
21:20	3.5	south-southwest	4.9
21:30	3.5	south-southwest	4.8
21:40	3.5	south-southwest	5.3
21:50	3.6	south-southwest	5.4
22:00	3.4	south	5.1
22:10	3.5	south-southwest	5.2
22:20	3.7	south-southwest	4.5
22:30	3.5	south	4.3
22:40	3.6	south-southwest	3.9
22:50	3.6	south-southwest	4.3
23:00	3.9	south-southwest	4.3
23:10	3.6	south-southwest	4.5
23:20	3.6	south-southwest	3.7
23:30	3.6	south-southwest	3.2
23:40	3.5	south	4.2
23:50	3.6	south	4.6