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

○Information

○Measurement value list ： 2025/06/20(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	3.4	south	2.5
00:10	3.4	south	3.3
00:20	3.6	south	2.9
00:30	3.5	south	3.1
00:40	3.6	south-southwest	2.6
00:50	3.4	south	2.7
01:00	3.6	south	2.4
01:10	3.5	south	1.0
01:20	3.7	south-southeast	0.8
01:30	3.5	south	0.7
01:40	3.7	south	1.4
01:50	3.5	south	1.8
02:00	3.6	south	0.8
02:10	3.6	southwest	0.7
02:20	3.5	-	CALM
02:30	3.6	-	CALM
02:40	3.5	-	CALM
02:50	3.5	-	CALM
03:00	3.6	-	CALM
03:10	3.7	-	CALM
03:20	3.6	-	CALM
03:30	3.5	-	CALM
03:40	3.6	-	CALM
03:50	3.6	-	CALM
04:00	3.6	-	CALM
04:10	3.5	-	CALM
04:20	3.6	-	CALM
04:30	3.6	-	CALM
04:40	3.7	-	CALM
04:50	3.5	-	CALM
05:00	3.6	-	CALM
05:10	3.7	north	1.0
05:20	3.7	north-northeast	0.9
05:30	3.5	north-northeast	0.7
05:40	3.7	-	CALM
05:50	3.6	northwest	0.9
06:00	3.4	west-northwest	1.2
06:10	3.5	northwest	1.6
06:20	3.6	north	2.2
06:30	3.5	north	1.5
06:40	3.7	north	1.5
06:50	3.7	north	0.8
07:00	3.5	north-northwest	1.3
07:10	3.7	north-northwest	1.4
07:20	3.6	north	1.2
07:30	3.4	north-northeast	1.1
07:40	3.7	east-northeast	1.0
07:50	3.6	east-northeast	1.4
08:00	3.5	east	0.9
08:10	3.5	east-northeast	1.2
08:20	3.6	east-southeast	1.4
08:30	3.5	east-southeast	1.9
08:40	3.6	southeast	1.3
08:50	3.7	southeast	2.3
09:00	3.7	east-southeast	2.5
09:10	3.7	southeast	3.0
09:20	3.6	east-southeast	2.4
09:30	3.5	southeast	2.6
09:40	3.7	southeast	3.0
09:50	3.6	east-southeast	3.8
10:00	3.6	southeast	5.0
10:10	3.6	southeast	5.2
10:20	3.5	southeast	5.4
10:30	3.6	south-southeast	5.8
10:40	3.5	southeast	5.5
10:50	3.6	southeast	5.0
11:00	3.3	southeast	4.9
11:10	3.6	southeast	6.0
11:20	3.6	southeast	6.4
11:30	3.6	south-southeast	6.4
11:40	3.7	southeast	6.2
11:50	3.7	southeast	6.0
12:00	3.6	south-southeast	7.7
12:10	3.5	south-southeast	7.9
12:20	3.4	south-southeast	8.5
12:30	3.6	southeast	7.8
12:40	3.6	southeast	8.2
12:50	3.6	southeast	8.2
13:00	3.5	southeast	8.7
13:10	3.5	southeast	8.0
13:20	3.5	southeast	7.7
13:30	3.7	south-southeast	7.6
13:40	3.5	southeast	7.7
13:50	3.8	south-southeast	8.7
14:00	3.7	south-southeast	7.7
14:10	3.6	south-southeast	7.3
14:20	3.6	south-southeast	8.3
14:30	3.6	south-southeast	7.8
14:40	3.5	south-southeast	9.6
14:50	3.7	southeast	9.5
15:00	3.5	south-southeast	8.7
15:10	3.5	south-southeast	10.5
15:20	3.6	south-southeast	9.6
15:30	3.5	south-southeast	9.0
15:40	3.5	south-southeast	9.7
15:50	3.4	south-southeast	10.2
16:00	3.5	south-southeast	8.3
16:10	3.5	south-southeast	9.7
16:20	3.6	south-southeast	10.0
16:30	3.6	south-southeast	10.5
16:40	3.5	south-southeast	9.5
16:50	3.5	south-southeast	9.7
17:00	3.6	south-southeast	9.4
17:10	3.5	south-southeast	9.2
17:20	3.6	south-southeast	9.0
17:30	3.7	south-southeast	9.5
17:40	3.5	south-southeast	9.2
17:50	3.6	south-southeast	10.0
18:00	3.5	south-southeast	9.2
18:10	3.7	south-southeast	9.0
18:20	3.6	south-southeast	9.1
18:30	3.6	south-southeast	9.1
18:40	3.6	south-southeast	9.1
18:50	3.6	south-southeast	7.8
19:00	3.7	south-southeast	7.8
19:10	3.6	south-southeast	7.4
19:20	3.5	south-southeast	7.7
19:30	3.6	south-southeast	8.4
19:40	3.6	south-southeast	7.9
19:50	3.5	south-southeast	7.1
20:00	3.5	south-southeast	6.6
20:10	3.6	south-southeast	6.2
20:20	3.6	south	6.6
20:30	3.5	south-southeast	6.3
20:40	3.5	south-southeast	6.7
20:50	3.6	south-southeast	7.7
21:00	3.8	south-southeast	6.9
21:10	3.6	south	6.4
21:20	3.4	south	5.8
21:30	3.5	south	5.8
21:40	3.5	south-southeast	5.0
21:50	3.6	south	5.5
22:00	3.6	south	5.3
22:10	3.6	south-southeast	4.6
22:20	3.6	south	5.0
22:30	3.5	south	5.5
22:40	3.5	south	4.9
22:50	3.6	south-southeast	5.2
23:00	3.5	south	5.5
23:10	3.5	south	5.2
23:20	3.6	south	5.1
23:30	3.5	south	6.0
23:40	3.4	south	6.4
23:50	3.4	south	5.9