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

○Information

○Measurement value list ： 2026/05/25(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	south-southeast	5.0
00:10	3.6	south	5.2
00:20	3.7	south	4.9
00:30	3.6	south-southeast	4.8
00:40	3.6	south-southeast	6.1
00:50	3.6	south-southeast	7.0
01:00	3.5	south	8.1
01:10	3.6	south	7.4
01:20	3.6	south	7.1
01:30	3.7	south	6.1
01:40	3.5	south	5.2
01:50	3.8	south	4.5
02:00	3.5	south	3.6
02:10	3.6	south-southeast	3.8
02:20	3.5	south	4.9
02:30	3.5	south	4.5
02:40	3.7	south	2.6
02:50	3.6	south	2.0
03:00	3.6	south	1.9
03:10	3.6	south	3.0
03:20	3.7	south	2.6
03:30	3.6	south-southwest	3.2
03:40	3.6	south-southwest	3.0
03:50	3.5	south-southwest	3.4
04:00	3.7	south	3.4
04:10	3.6	south	3.7
04:20	3.6	south	3.3
04:30	3.7	south	3.9
04:40	3.7	south	4.1
04:50	3.6	south	4.2
05:00	3.6	south-southwest	3.4
05:10	3.7	south-southwest	3.0
05:20	3.6	south-southwest	2.5
05:30	3.6	south-southwest	2.5
05:40	3.5	southwest	2.1
05:50	3.5	west-southwest	1.4
06:00	3.5	north-northeast	0.6
06:10	3.6	-	CALM
06:20	3.7	east-northeast	1.5
06:30	3.4	east-northeast	1.3
06:40	3.6	northeast	1.5
06:50	3.6	north	1.0
07:00	3.6	northeast	1.5
07:10	3.5	north-northeast	1.1
07:20	3.7	north-northeast	1.5
07:30	3.7	north-northeast	1.0
07:40	3.5	northeast	1.3
07:50	3.7	east-northeast	1.6
08:00	3.5	east	1.9
08:10	3.7	east-northeast	2.0
08:20	3.5	east-southeast	2.4
08:30	3.5	east	2.8
08:40	3.5	east	2.8
08:50	3.6	east-southeast	2.8
09:00	3.5	east	2.3
09:10	3.6	east-southeast	1.5
09:20	3.7	southeast	2.1
09:30	3.5	south-southeast	2.9
09:40	3.6	southeast	3.1
09:50	3.8	south-southeast	3.7
10:00	3.6	south-southeast	4.7
10:10	3.7	southeast	4.9
10:20	3.6	south-southeast	4.0
10:30	3.5	southeast	3.9
10:40	3.7	southeast	5.3
10:50	3.7	southeast	5.1
11:00	3.6	southeast	5.5
11:10	3.5	southeast	6.1
11:20	3.6	southeast	6.1
11:30	3.5	southeast	5.9
11:40	3.7	southeast	5.6
11:50	3.6	south-southeast	6.5
12:00	3.6	southeast	5.9
12:10	3.6	southeast	5.5
12:20	3.7	southeast	5.1
12:30	3.6	south-southeast	5.2
12:40	3.7	south-southeast	6.3
12:50	3.7	southeast	6.1
13:00	3.6	south-southeast	6.1
13:10	3.6	southeast	6.1
13:20	3.7	south-southeast	6.9
13:30	3.6	southeast	6.2
13:40	3.8	south-southeast	5.4
13:50	3.6	southeast	6.1
14:00	3.6	south-southeast	6.2
14:10	3.5	south-southeast	5.4
14:20	3.4	south-southeast	6.5
14:30	3.6	southeast	5.5
14:40	3.7	southeast	5.7
14:50	3.4	south-southeast	6.6
15:00	3.6	south-southeast	6.2
15:10	3.6	south-southeast	6.0
15:20	3.5	south-southeast	6.8
15:30	3.6	south-southeast	6.9
15:40	3.5	south-southeast	6.3
15:50	3.6	south-southeast	7.6
16:00	3.7	south-southeast	6.4
16:10	3.6	southeast	6.1
16:20	3.7	south-southeast	7.5
16:30	3.7	south-southeast	6.9
16:40	3.7	south-southeast	7.2
16:50	3.6	south-southeast	7.3
17:00	3.6	south-southeast	7.1
17:10	3.5	south-southeast	7.5
17:20	3.7	south-southeast	6.3
17:30	3.6	south-southeast	6.5
17:40	3.5	south-southeast	7.1
17:50	3.7	south-southeast	6.7
18:00	3.4	south-southeast	6.8
18:10	3.7	south-southeast	6.5
18:20	3.5	south-southeast	6.3
18:30	3.6	south-southeast	6.4
18:40	3.5	south-southeast	6.5
18:50	3.6	south-southeast	5.8
19:00	3.6	south-southeast	5.5
19:10	3.5	south	5.5
19:20	3.6	south-southeast	5.1
19:30	3.6	south-southeast	4.5
19:40	3.6	south	4.8
19:50	3.8	south	5.0
20:00	3.5	south	5.3
20:10	3.7	south	5.3
20:20	3.6	south	5.0
20:30	3.6	south	4.3
20:40	3.6	south	3.9
20:50	3.6	south	4.6
21:00	3.6	south	4.4
21:10	3.5	south	4.2
21:20	3.8	south	3.9
21:30	3.5	south	2.9
21:40	3.5	south	3.1
21:50	3.7	south	3.3
22:00	3.6	south-southeast	3.0
22:10	3.5	south-southeast	3.5
22:20	3.6	south	4.1
22:30	3.5	south-southeast	3.8
22:40	3.5	south-southeast	3.8
22:50	3.5	south	4.2
23:00	3.5	south	4.3
23:10	3.4	south	4.0
23:20	3.5	south	4.2
23:30	3.7	south	4.4
23:40	3.6	south	4.8
23:50	3.6	south	4.0