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

○Information

○Measurement value list ： 2026/02/22(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	3.8	southwest	1.0
00:10	3.8	west-southwest	1.0
00:20	3.6	west	0.6
00:30	3.9	west	0.8
00:40	3.7	west	0.8
00:50	3.7	-	CALM
01:00	3.8	-	CALM
01:10	3.6	south-southeast	0.9
01:20	3.7	south-southeast	0.7
01:30	3.8	south-southeast	1.1
01:40	3.7	southeast	1.0
01:50	3.9	south	1.2
02:00	3.6	south	0.7
02:10	3.7	-	CALM
02:20	3.9	-	CALM
02:30	3.7	southeast	0.7
02:40	3.7	-	CALM
02:50	3.7	-	CALM
03:00	3.8	-	CALM
03:10	3.6	-	CALM
03:20	3.7	-	CALM
03:30	3.8	south-southwest	0.8
03:40	3.7	-	CALM
03:50	3.8	north-northwest	1.1
04:00	3.7	northwest	1.6
04:10	3.6	north-northwest	2.5
04:20	3.6	northwest	3.0
04:30	3.6	northwest	3.1
04:40	3.5	northwest	3.1
04:50	3.6	north-northwest	2.1
05:00	3.6	north-northwest	2.7
05:10	3.8	north-northwest	3.2
05:20	3.8	north	3.4
05:30	3.9	north	3.4
05:40	3.7	north	3.4
05:50	3.8	north-northwest	3.9
06:00	3.8	northwest	4.0
06:10	3.7	north-northwest	3.9
06:20	3.8	north-northwest	3.9
06:30	3.7	north-northwest	3.7
06:40	3.8	north	3.7
06:50	3.6	north	3.8
07:00	3.8	north	4.0
07:10	3.7	north-northwest	4.1
07:20	3.8	north-northwest	4.4
07:30	3.5	north-northwest	4.1
07:40	3.5	north-northwest	3.8
07:50	3.6	north-northwest	3.5
08:00	3.7	northwest	3.3
08:10	3.6	north-northwest	3.3
08:20	3.7	north-northwest	2.6
08:30	3.7	north	1.8
08:40	3.8	north-northwest	2.1
08:50	3.6	north	1.9
09:00	3.5	north-northeast	2.1
09:10	3.8	north	1.5
09:20	3.6	north-northeast	1.1
09:30	3.7	northeast	0.8
09:40	3.6	northeast	1.5
09:50	3.6	northeast	0.8
10:00	3.6	east-northeast	0.7
10:10	3.6	east	1.6
10:20	3.8	east-northeast	1.3
10:30	3.6	east	2.5
10:40	3.8	east-northeast	3.0
10:50	3.6	east	2.9
11:00	3.8	east	3.7
11:10	3.8	east	3.3
11:20	3.7	east-southeast	3.0
11:30	3.7	east-southeast	2.7
11:40	3.8	east	2.8
11:50	3.7	east-southeast	2.6
12:00	3.9	east-northeast	2.8
12:10	3.9	east	2.8
12:20	3.7	east	2.9
12:30	3.5	east-southeast	3.1
12:40	3.7	east-southeast	3.0
12:50	3.6	east-southeast	4.0
13:00	3.8	southeast	4.2
13:10	3.5	southeast	4.8
13:20	3.5	southeast	5.1
13:30	3.8	south-southeast	6.7
13:40	3.9	south-southeast	8.0
13:50	3.5	south-southeast	8.8
14:00	3.9	south-southeast	8.7
14:10	3.9	south-southeast	10.1
14:20	3.8	south-southeast	9.5
14:30	3.6	south-southeast	9.4
14:40	3.7	south-southeast	8.8
14:50	3.8	south-southeast	8.8
15:00	3.7	south-southeast	8.1
15:10	3.7	south-southeast	8.6
15:20	3.8	south-southeast	8.8
15:30	3.6	south-southeast	8.9
15:40	3.7	south-southeast	8.6
15:50	3.8	south-southeast	9.4
16:00	3.6	south-southeast	10.7
16:10	3.7	south-southeast	10.2
16:20	3.6	south-southeast	8.7
16:30	3.7	south-southeast	8.8
16:40	3.7	south	8.0
16:50	3.7	south	8.2
17:00	3.7	south	7.8
17:10	3.7	south	6.8
17:20	3.6	south-southeast	5.9
17:30	3.7	south-southeast	7.0
17:40	3.7	south	6.8
17:50	3.7	south	5.9
18:00	3.7	south	6.5
18:10	3.6	south	5.4
18:20	3.6	south	5.1
18:30	3.7	south	6.1
18:40	3.7	south	6.1
18:50	3.6	south	6.2
19:00	3.7	south-southwest	6.0
19:10	3.6	south	6.0
19:20	3.7	south	5.9
19:30	3.6	south	4.8
19:40	3.7	south	5.0
19:50	3.6	south	5.4
20:00	3.7	south	5.4
20:10	3.7	south-southeast	3.5
20:20	3.6	south	3.1
20:30	3.6	south-southeast	3.4
20:40	3.9	south	3.0
20:50	3.6	south-southeast	2.3
21:00	3.7	south-southeast	2.9
21:10	3.7	south-southeast	2.6
21:20	3.7	south-southeast	3.5
21:30	3.6	southeast	3.8
21:40	3.7	south-southeast	5.1
21:50	3.7	south-southeast	5.8
22:00	3.8	south	5.9
22:10	3.7	south-southeast	4.4
22:20	3.8	south	3.9
22:30	3.6	south	2.2
22:40	3.8	south-southeast	2.6
22:50	3.6	south	3.8
23:00	3.6	south-southeast	6.7
23:10	3.7	-	-
23:20	3.8	south-southeast	6.9
23:30	3.7	south-southeast	7.5
23:40	3.8	south-southeast	6.5
23:50	3.6	south	6.3