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

○Information

○Measurement value list ： 2026/07/26(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	north-northeast	0.8
00:10	3.7	-	CALM
00:20	3.5	-	CALM
00:30	3.5	-	CALM
00:40	3.4	-	CALM
00:50	3.4	-	CALM
01:00	3.5	-	CALM
01:10	3.5	-	CALM
01:20	3.4	-	CALM
01:30	3.5	south-southwest	1.2
01:40	3.8	-	CALM
01:50	3.6	south	0.6
02:00	3.4	southeast	0.8
02:10	3.5	-	CALM
02:20	3.4	southwest	0.6
02:30	3.5	-	CALM
02:40	3.4	-	CALM
02:50	3.5	southeast	0.7
03:00	3.6	southeast	0.6
03:10	3.5	-	-
03:20	3.6	north-northwest	0.8
03:30	3.6	north-northwest	1.3
03:40	3.6	north-northwest	1.4
03:50	3.6	northwest	2.3
04:00	3.5	northwest	3.0
04:10	3.7	northwest	2.3
04:20	3.5	west-northwest	2.4
04:30	3.6	northwest	2.5
04:40	3.6	northwest	2.2
04:50	3.5	northwest	2.9
05:00	3.5	northwest	2.5
05:10	3.6	north-northwest	3.0
05:20	3.5	north-northwest	3.8
05:30	3.5	north	3.6
05:40	3.6	north-northeast	2.8
05:50	3.6	north	1.2
06:00	3.5	north	2.2
06:10	3.5	north	2.0
06:20	3.4	north-northwest	1.9
06:30	3.6	north-northeast	2.5
06:40	3.6	north	2.1
06:50	3.5	east-northeast	2.5
07:00	3.6	east-northeast	3.3
07:10	3.6	east-northeast	3.3
07:20	3.6	east	4.1
07:30	3.4	east	3.2
07:40	3.4	east	2.7
07:50	3.5	east-southeast	2.5
08:00	3.8	east	3.1
08:10	3.7	east	2.6
08:20	3.6	southeast	0.9
08:30	3.6	south-southeast	1.0
08:40	3.3	-	CALM
08:50	3.4	southeast	0.7
09:00	3.6	-	CALM
09:10	3.7	south-southwest	0.9
09:20	3.6	south-southwest	0.9
09:30	3.6	south-southwest	1.3
09:40	3.6	south-southwest	1.2
09:50	3.6	south	1.1
10:00	3.5	south	0.9
10:10	3.5	south	1.1
10:20	3.5	south	1.3
10:30	3.5	southeast	1.2
10:40	3.6	southeast	1.2
10:50	3.5	east-southeast	1.9
11:00	3.3	southeast	2.4
11:10	3.6	east-southeast	2.6
11:20	3.5	east-southeast	3.1
11:30	3.6	east-southeast	3.1
11:40	3.5	east-southeast	2.7
11:50	3.7	east-southeast	3.0
12:00	3.5	east-southeast	2.6
12:10	3.6	east-southeast	2.5
12:20	3.4	east-southeast	2.2
12:30	3.6	southeast	2.3
12:40	3.4	southeast	2.2
12:50	3.5	southeast	2.1
13:00	3.6	east-southeast	2.1
13:10	3.6	east-southeast	1.2
13:20	3.6	east-southeast	1.0
13:30	3.4	east	1.0
13:40	3.5	east	1.5
13:50	3.6	east-southeast	1.5
14:00	3.6	southeast	1.2
14:10	3.6	south-southeast	0.8
14:20	3.6	south-southwest	0.6
14:30	3.6	-	CALM
14:40	3.6	southeast	1.0
14:50	3.6	southeast	0.7
15:00	3.6	east	0.7
15:10	3.6	-	CALM
15:20	3.6	-	CALM
15:30	3.7	-	CALM
15:40	3.5	-	CALM
15:50	3.5	-	CALM
16:00	3.6	northwest	0.6
16:10	3.6	west	0.8
16:20	3.5	north	0.6
16:30	3.4	northwest	0.9
16:40	3.5	north-northwest	1.4
16:50	3.6	west-northwest	1.4
17:00	3.4	northwest	1.3
17:10	3.4	northwest	1.5
17:20	3.5	west-northwest	1.8
17:30	3.3	west-northwest	2.1
17:40	3.7	west-northwest	2.2
17:50	3.5	west-northwest	2.1
18:00	3.6	northwest	1.7
18:10	3.5	north-northwest	2.3
18:20	3.5	northwest	2.1
18:30	3.7	north-northwest	2.4
18:40	3.7	north-northwest	2.5
18:50	3.6	north-northwest	2.9
19:00	3.6	north-northwest	3.1
19:10	3.6	north-northwest	4.0
19:20	3.5	north-northwest	4.1
19:30	3.6	north-northwest	4.0
19:40	3.5	north-northwest	3.8
19:50	3.4	northwest	4.1
20:00	3.5	northwest	4.1
20:10	3.8	northwest	4.1
20:20	3.5	north-northwest	4.0
20:30	3.5	north-northwest	4.8
20:40	3.5	north-northwest	5.4
20:50	3.5	north-northwest	5.8
21:00	3.6	north-northwest	6.9
21:10	3.5	north-northwest	7.7
21:20	3.6	northwest	7.3
21:30	3.6	northwest	6.4
21:40	3.5	northwest	6.8
21:50	3.6	northwest	7.4
22:00	3.4	northwest	8.0
22:10	3.5	northwest	8.0
22:20	3.5	north-northwest	8.1
22:30	3.5	northwest	7.4
22:40	3.4	northwest	7.0
22:50	3.5	north-northwest	6.1
23:00	3.6	north-northwest	7.1
23:10	3.5	north-northwest	7.3
23:20	3.6	north-northwest	6.5
23:30	3.6	north-northwest	7.7
23:40	3.6	north-northwest	5.9
23:50	3.6	north-northwest	6.3