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

○Information

○Measurement value list ： 2026/08/19(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	5.0
00:10	3.4	south-southwest	4.8
00:20	3.6	south-southwest	4.6
00:30	3.6	south-southwest	4.3
00:40	3.5	south-southwest	4.3
00:50	3.6	south-southwest	3.7
01:00	3.5	south-southwest	4.3
01:10	3.7	south-southwest	4.2
01:20	3.6	south-southwest	4.5
01:30	3.6	south-southwest	4.5
01:40	3.5	south	4.6
01:50	3.6	south	3.6
02:00	3.3	south-southwest	3.3
02:10	3.5	south-southwest	2.2
02:20	3.5	south-southwest	2.2
02:30	3.5	south-southwest	2.4
02:40	3.7	south-southwest	2.5
02:50	3.7	south-southwest	2.3
03:00	3.5	south	2.0
03:10	3.5	south-southwest	2.0
03:20	3.4	south-southwest	1.9
03:30	3.7	south	1.5
03:40	3.5	south-southeast	1.6
03:50	3.5	south-southeast	1.5
04:00	3.6	south-southeast	1.8
04:10	3.5	south-southeast	1.5
04:20	3.6	south-southeast	1.3
04:30	3.4	south	1.0
04:40	3.4	southwest	1.4
04:50	3.5	southwest	1.5
05:00	3.6	southwest	1.5
05:10	3.6	southwest	1.8
05:20	3.5	west-southwest	1.7
05:30	3.4	west-southwest	1.9
05:40	3.5	southwest	1.6
05:50	3.4	southwest	1.5
06:00	3.4	southwest	1.3
06:10	3.5	south-southwest	0.8
06:20	3.5	-	CALM
06:30	3.4	-	CALM
06:40	3.6	-	CALM
06:50	3.6	northeast	0.7
07:00	3.5	northeast	1.0
07:10	3.6	east-southeast	0.7
07:20	3.5	east-southeast	0.8
07:30	3.6	east-southeast	1.4
07:40	3.5	east-southeast	1.6
07:50	3.5	east-southeast	2.1
08:00	3.5	east-southeast	1.7
08:10	3.5	east-southeast	2.1
08:20	3.6	southeast	2.4
08:30	3.7	southeast	2.3
08:40	3.5	south-southeast	2.5
08:50	3.6	southeast	2.4
09:00	3.5	southeast	2.5
09:10	3.6	south-southeast	3.1
09:20	3.5	southeast	3.4
09:30	3.5	southeast	3.0
09:40	3.4	southeast	3.5
09:50	3.6	south-southeast	3.8
10:00	3.6	southeast	4.5
10:10	3.5	southeast	4.5
10:20	3.5	southeast	4.5
10:30	3.5	southeast	4.7
10:40	3.6	southeast	5.9
10:50	3.5	southeast	5.9
11:00	3.7	southeast	6.7
11:10	3.6	south-southeast	6.6
11:20	3.6	southeast	5.2
11:30	3.5	south-southeast	7.0
11:40	3.6	southeast	6.3
11:50	3.4	southeast	6.0
12:00	3.6	south-southeast	6.7
12:10	3.4	south-southeast	6.4
12:20	3.5	south-southeast	5.9
12:30	3.5	south-southeast	6.6
12:40	3.6	southeast	6.6
12:50	3.5	south-southeast	5.9
13:00	3.5	southeast	6.9
13:10	3.4	south-southeast	6.7
13:20	3.5	south-southeast	6.1
13:30	3.6	south-southeast	6.3
13:40	3.5	south-southeast	6.1
13:50	3.6	south-southeast	6.2
14:00	3.4	south-southeast	6.9
14:10	3.6	south-southeast	6.6
14:20	3.4	south-southeast	6.1
14:30	3.5	south-southeast	6.3
14:40	3.6	south-southeast	6.3
14:50	3.5	south-southeast	7.0
15:00	3.5	south-southeast	6.7
15:10	3.5	southeast	5.9
15:20	3.5	south-southeast	6.0
15:30	3.6	south-southeast	6.9
15:40	3.4	south	7.9
15:50	3.7	south-southeast	6.7
16:00	3.4	south-southeast	7.3
16:10	3.5	south-southeast	7.7
16:20	3.3	south-southeast	7.6
16:30	3.6	south-southeast	7.3
16:40	3.5	south-southeast	7.4
16:50	3.4	south-southeast	7.6
17:00	3.5	south-southeast	7.0
17:10	3.4	south-southeast	7.4
17:20	3.5	south-southeast	7.3
17:30	3.6	south-southeast	7.6
17:40	3.4	south-southeast	8.4
17:50	3.5	south-southeast	8.3
18:00	3.6	south-southeast	7.8
18:10	3.6	south-southeast	8.1
18:20	3.5	south-southeast	7.1
18:30	3.5	south-southeast	6.8
18:40	3.5	south	5.8
18:50	3.6	south	7.0
19:00	3.6	south	6.2
19:10	3.5	south	5.9
19:20	3.6	south	6.1
19:30	3.7	south	5.5
19:40	3.4	south	5.6
19:50	3.5	south	5.8
20:00	3.5	south	5.9
20:10	3.6	south	5.6
20:20	3.4	south	5.1
20:30	3.6	south	4.9
20:40	3.4	south	5.6
20:50	3.6	south	4.9
21:00	3.6	south	5.6
21:10	3.5	south	5.1
21:20	3.6	south	5.1
21:30	3.6	south	4.7
21:40	3.6	south	5.5
21:50	3.3	south	5.4
22:00	3.6	south	5.3
22:10	3.6	south	4.8
22:20	3.4	south	4.4
22:30	3.6	south	4.2
22:40	3.5	south	5.0
22:50	3.4	south	4.6
23:00	3.7	south-southwest	4.6
23:10	3.5	south	3.8
23:20	3.5	south	4.1
23:30	3.6	south	4.1
23:40	3.6	south	3.7
23:50	3.4	south	4.5