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

○Information

○Measurement value list ： 2025/09/13(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	southeast	1.6
00:10	3.6	south-southeast	1.4
00:20	3.6	south	1.4
00:30	3.6	south-southeast	0.7
00:40	3.7	south-southeast	1.4
00:50	3.5	southeast	1.7
01:00	3.5	south-southeast	1.5
01:10	3.6	south	1.1
01:20	3.7	south	1.1
01:30	3.8	south-southwest	1.3
01:40	3.5	south-southwest	1.2
01:50	3.8	south-southwest	0.9
02:00	3.7	southwest	0.8
02:10	3.7	southwest	0.6
02:20	3.5	-	CALM
02:30	3.5	-	CALM
02:40	3.7	-	CALM
02:50	3.6	-	CALM
03:00	3.6	-	CALM
03:10	3.6	-	CALM
03:20	3.4	-	CALM
03:30	3.6	southwest	0.6
03:40	3.8	west-southwest	0.8
03:50	3.5	-	CALM
04:00	3.7	-	CALM
04:10	3.6	-	CALM
04:20	3.6	-	CALM
04:30	3.5	-	CALM
04:40	3.6	-	CALM
04:50	3.5	-	CALM
05:00	3.5	-	CALM
05:10	3.5	southwest	0.9
05:20	3.5	west-southwest	0.6
05:30	3.5	west-southwest	0.7
05:40	3.5	-	CALM
05:50	3.5	-	CALM
06:00	3.6	-	CALM
06:10	3.5	-	CALM
06:20	3.5	southwest	0.6
06:30	3.6	south-southwest	1.1
06:40	3.5	south-southwest	1.4
06:50	3.6	south-southwest	1.2
07:00	3.6	south-southwest	1.5
07:10	3.6	south	1.7
07:20	3.6	south-southwest	1.4
07:30	3.7	south-southwest	1.5
07:40	3.6	south	1.3
07:50	3.5	south-southeast	1.4
08:00	3.8	south-southeast	1.5
08:10	3.6	south	1.2
08:20	3.6	south-southeast	1.6
08:30	3.6	south	1.6
08:40	3.5	south	1.7
08:50	3.6	south	1.0
09:00	3.6	south-southeast	0.8
09:10	3.7	south	1.2
09:20	3.6	south-southeast	2.5
09:30	3.4	southeast	2.5
09:40	3.5	southeast	2.3
09:50	3.7	south-southeast	2.2
10:00	3.5	southeast	1.4
10:10	3.6	south-southwest	1.3
10:20	3.6	south-southeast	1.7
10:30	3.6	southeast	1.9
10:40	3.5	southeast	1.7
10:50	3.6	southeast	2.5
11:00	3.6	south-southeast	2.2
11:10	3.5	south-southwest	2.7
11:20	3.9	south	4.0
11:30	3.7	south	4.5
11:40	3.6	south	4.2
11:50	3.6	south	2.8
12:00	3.6	south-southeast	4.1
12:10	3.7	south-southeast	3.7
12:20	3.5	south	4.2
12:30	3.5	south-southeast	4.8
12:40	3.6	south-southeast	4.4
12:50	3.7	south-southeast	4.5
13:00	3.5	south-southeast	4.6
13:10	3.6	south-southeast	4.2
13:20	3.7	south-southeast	4.2
13:30	3.7	south-southeast	3.8
13:40	3.5	south-southeast	5.2
13:50	3.7	south-southeast	5.0
14:00	3.6	south-southeast	5.6
14:10	3.5	south-southeast	4.7
14:20	3.6	south-southeast	4.7
14:30	3.6	south-southeast	4.4
14:40	3.5	south-southeast	4.7
14:50	3.7	south-southeast	5.0
15:00	3.6	southeast	5.0
15:10	3.4	southeast	4.8
15:20	3.6	south-southeast	4.9
15:30	3.7	south-southeast	4.5
15:40	3.7	southeast	3.9
15:50	3.6	southeast	3.5
16:00	3.4	south-southeast	4.3
16:10	3.5	south-southeast	4.8
16:20	3.5	south-southeast	5.0
16:30	3.5	southeast	5.4
16:40	3.5	south-southeast	5.2
16:50	3.4	south-southeast	4.6
17:00	3.5	south-southeast	5.1
17:10	3.5	south-southeast	4.0
17:20	3.6	south-southeast	4.1
17:30	3.8	south-southeast	5.1
17:40	3.5	south-southeast	6.1
17:50	3.4	south-southeast	5.7
18:00	3.7	south-southeast	5.1
18:10	3.6	south-southeast	5.8
18:20	3.7	south-southeast	5.5
18:30	3.6	south-southeast	4.4
18:40	3.7	south	4.7
18:50	3.5	south	5.5
19:00	3.6	south	5.4
19:10	3.7	south	6.1
19:20	3.6	south	6.1
19:30	3.6	south	7.2
19:40	3.6	south	7.6
19:50	3.6	south	6.9
20:00	3.5	south-southeast	6.7
20:10	3.7	south	6.0
20:20	3.5	south	5.6
20:30	3.6	south	5.5
20:40	3.7	south-southeast	4.8
20:50	3.4	south-southeast	5.6
21:00	3.3	south	5.6
21:10	3.7	south-southeast	5.2
21:20	3.5	south	5.5
21:30	3.5	south	5.0
21:40	3.5	south-southeast	4.5
21:50	3.6	south-southeast	5.3
22:00	3.5	south-southeast	5.9
22:10	3.5	south-southeast	6.4
22:20	3.7	south	6.0
22:30	3.7	south	5.7
22:40	3.6	south	6.6
22:50	3.5	south-southeast	6.5
23:00	3.5	south-southeast	6.2
23:10	3.6	south	5.4
23:20	3.4	south	5.0
23:30	3.6	south	5.3
23:40	3.5	south	5.6
23:50	3.5	south-southeast	5.8