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

○Information

○Measurement value list ： 2025/09/20(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	south-southeast	0.7
00:10	3.5	south	0.9
00:20	3.5	south-southeast	1.2
00:30	3.7	southeast	1.0
00:40	3.5	south	1.0
00:50	3.5	southeast	0.7
01:00	3.5	south	0.6
01:10	3.6	south-southwest	0.9
01:20	3.5	-	CALM
01:30	3.8	west-southwest	0.6
01:40	3.5	west-southwest	0.9
01:50	3.6	southwest	0.7
02:00	3.6	-	CALM
02:10	3.5	-	CALM
02:20	3.6	-	CALM
02:30	3.6	south	0.7
02:40	3.6	south	0.9
02:50	3.5	southeast	0.9
03:00	3.5	south-southeast	0.7
03:10	3.6	southeast	0.8
03:20	3.7	south-southeast	0.7
03:30	3.6	south	0.9
03:40	3.5	south	0.9
03:50	3.6	south-southwest	1.0
04:00	3.4	southwest	1.3
04:10	3.7	south-southwest	1.2
04:20	3.7	south-southwest	1.4
04:30	3.6	south	1.4
04:40	3.6	south	1.9
04:50	3.6	south	1.8
05:00	3.5	south	2.1
05:10	3.5	south	2.2
05:20	3.5	south	2.0
05:30	3.7	south	2.5
05:40	3.5	south	2.4
05:50	3.6	south-southwest	2.2
06:00	3.5	south-southwest	2.8
06:10	3.7	south-southwest	2.5
06:20	3.6	south-southwest	2.6
06:30	3.5	south	2.1
06:40	3.7	south-southwest	2.4
06:50	3.5	south-southwest	2.4
07:00	3.6	south-southwest	2.4
07:10	3.5	south-southwest	2.2
07:20	3.7	south-southwest	2.3
07:30	3.5	southwest	2.1
07:40	3.5	south-southwest	1.3
07:50	3.6	southwest	1.7
08:00	3.6	southwest	2.0
08:10	3.5	southwest	2.0
08:20	3.7	south-southwest	1.2
08:30	3.7	south-southwest	0.8
08:40	3.7	south-southwest	0.9
08:50	3.5	south-southwest	1.4
09:00	3.7	south	1.4
09:10	3.6	south	1.3
09:20	3.4	south	1.1
09:30	3.6	south	1.1
09:40	3.7	south-southwest	0.9
09:50	3.6	south-southeast	1.0
10:00	3.7	south	1.6
10:10	3.5	south	2.4
10:20	3.5	east-southeast	1.6
10:30	3.6	east-southeast	3.6
10:40	3.5	east-southeast	3.8
10:50	3.6	southeast	3.3
11:00	3.5	southeast	3.4
11:10	3.6	south-southeast	2.8
11:20	3.6	east-southeast	3.6
11:30	3.5	southeast	3.2
11:40	3.6	southeast	2.9
11:50	3.7	southeast	3.7
12:00	3.7	south-southeast	3.9
12:10	3.6	south-southeast	3.8
12:20	3.8	southeast	3.8
12:30	3.7	south-southeast	4.1
12:40	3.7	south-southeast	3.9
12:50	3.6	south-southeast	3.4
13:00	3.6	south-southeast	2.8
13:10	3.5	south	2.6
13:20	3.6	south	3.1
13:30	3.6	south-southeast	4.3
13:40	3.7	south-southeast	4.4
13:50	3.6	south-southeast	3.4
14:00	3.5	south-southeast	3.5
14:10	3.7	southeast	3.5
14:20	3.5	south-southeast	3.6
14:30	3.7	southeast	3.6
14:40	3.5	south-southeast	4.5
14:50	3.6	south-southeast	5.2
15:00	3.6	south	5.3
15:10	3.5	south	5.2
15:20	3.4	south-southeast	4.9
15:30	3.6	south	5.6
15:40	3.6	south	4.8
15:50	3.6	south	5.2
16:00	3.6	south	6.3
16:10	3.6	south	6.3
16:20	3.5	south-southeast	6.4
16:30	3.6	south-southeast	5.6
16:40	3.6	south-southeast	5.8
16:50	3.7	south	6.8
17:00	3.6	south	6.6
17:10	3.5	south-southeast	6.3
17:20	3.7	south-southeast	6.8
17:30	3.6	south-southeast	7.2
17:40	3.6	south-southeast	6.9
17:50	3.6	south-southeast	7.5
18:00	3.5	south-southeast	7.1
18:10	3.5	south-southeast	8.2
18:20	3.6	south-southeast	8.1
18:30	3.6	south-southeast	8.6
18:40	3.7	south	9.2
18:50	3.6	south	9.8
19:00	3.5	south	9.7
19:10	3.6	south	8.5
19:20	3.6	south	8.8
19:30	3.7	south	9.7
19:40	3.6	south	7.9
19:50	3.6	south	8.4
20:00	3.7	south	9.3
20:10	3.6	south-southeast	8.7
20:20	3.6	south-southeast	8.6
20:30	3.5	south-southeast	7.7
20:40	3.6	south	7.0
20:50	3.5	south-southeast	6.5
21:00	3.5	-	-
21:10	3.6	-	-
21:20	3.5	south-southeast	9.2
21:30	3.5	south-southeast	9.9
21:40	3.6	south-southeast	9.3
21:50	3.7	south-southeast	8.3
22:00	3.7	south-southeast	7.3
22:10	3.5	south	4.6
22:20	3.6	south-southwest	6.1
22:30	3.6	south	4.3
22:40	3.6	south	2.7
22:50	3.5	south-southeast	4.4
23:00	3.5	south	6.3
23:10	3.6	south	7.1
23:20	3.5	south	6.8
23:30	3.7	south-southeast	7.9
23:40	3.6	south	7.2
23:50	3.5	south	7.1