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

○Information

○Measurement value list ： 2025/12/24(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	3.6	south	4.6
00:10	3.5	south-southeast	5.6
00:20	3.6	south-southeast	5.1
00:30	3.6	south-southeast	4.8
00:40	3.7	south-southeast	4.3
00:50	3.6	south	3.7
01:00	3.6	south	2.9
01:10	3.7	south	2.6
01:20	3.7	south-southeast	2.8
01:30	3.8	south	2.3
01:40	3.5	south	2.6
01:50	3.7	south-southeast	2.8
02:00	3.4	south	2.8
02:10	3.5	south	1.7
02:20	3.7	south-southeast	1.2
02:30	3.7	south	0.9
02:40	3.8	southwest	0.6
02:50	3.7	west-southwest	1.0
03:00	3.6	west	0.9
03:10	3.6	west-southwest	0.9
03:20	3.7	-	CALM
03:30	3.6	south	0.6
03:40	3.7	-	CALM
03:50	3.7	-	CALM
04:00	3.7	-	CALM
04:10	3.7	south-southeast	0.6
04:20	3.8	southeast	1.7
04:30	3.6	south-southeast	2.1
04:40	3.7	south-southeast	3.0
04:50	3.7	south-southeast	3.0
05:00	3.6	south-southeast	2.6
05:10	3.7	south-southeast	2.1
05:20	3.7	east-southeast	2.7
05:30	3.6	southeast	1.9
05:40	3.6	south-southeast	2.5
05:50	3.7	south-southwest	1.3
06:00	3.6	-	CALM
06:10	3.6	south-southwest	0.7
06:20	3.8	south-southeast	1.1
06:30	3.6	southeast	1.9
06:40	3.6	southeast	1.8
06:50	3.7	east	1.6
07:00	3.7	southeast	1.8
07:10	3.4	southeast	1.6
07:20	3.7	southeast	1.5
07:30	3.7	east-southeast	2.5
07:40	3.6	southeast	3.2
07:50	3.7	southeast	4.8
08:00	3.8	south-southeast	5.8
08:10	3.6	south-southeast	6.5
08:20	3.7	south-southeast	6.5
08:30	3.8	south	6.9
08:40	3.6	south	6.4
08:50	3.8	south	6.9
09:00	3.7	south	7.6
09:10	3.7	south	6.8
09:20	3.7	south	7.0
09:30	3.7	south	7.2
09:40	3.6	south	6.9
09:50	3.5	south	6.7
10:00	3.7	south	5.9
10:10	3.7	south	5.4
10:20	3.9	south	5.2
10:30	3.7	south	5.1
10:40	3.6	south	4.9
10:50	3.7	south	5.5
11:00	3.7	south	6.0
11:10	3.6	south	5.9
11:20	3.5	south-southeast	5.0
11:30	3.6	south	5.5
11:40	3.6	south-southeast	5.1
11:50	3.6	south-southeast	4.7
12:00	3.7	south-southeast	4.7
12:10	3.7	south-southeast	4.7
12:20	3.7	south-southeast	5.8
12:30	3.7	south-southeast	5.3
12:40	3.7	southeast	3.5
12:50	3.5	southeast	2.9
13:00	3.7	east	1.1
13:10	3.7	east	1.0
13:20	3.7	east-northeast	0.6
13:30	3.9	east-northeast	0.9
13:40	3.7	-	CALM
13:50	3.6	-	CALM
14:00	3.5	northeast	0.8
14:10	3.6	-	CALM
14:20	3.6	east-northeast	1.0
14:30	3.7	east	2.1
14:40	3.7	east	2.2
14:50	3.8	east-northeast	1.9
15:00	3.8	east	1.5
15:10	3.6	east	1.4
15:20	3.5	east-northeast	1.6
15:30	3.7	east	1.7
15:40	3.6	east-northeast	1.5
15:50	3.6	east-northeast	1.2
16:00	3.6	east-northeast	1.3
16:10	3.5	east	1.2
16:20	3.6	east	1.6
16:30	3.6	east	2.1
16:40	3.7	east	1.7
16:50	3.6	east	1.7
17:00	3.7	east-northeast	2.0
17:10	3.7	east-northeast	1.8
17:20	3.8	east	2.8
17:30	3.7	east	2.8
17:40	3.7	east	3.0
17:50	3.6	east-northeast	2.2
18:00	3.8	-	CALM
18:10	3.6	west	1.2
18:20	3.7	west	1.0
18:30	3.6	-	CALM
18:40	3.8	-	CALM
18:50	3.7	east	0.6
19:00	3.8	east-southeast	0.8
19:10	3.6	-	CALM
19:20	3.8	-	CALM
19:30	3.7	-	CALM
19:40	3.7	-	CALM
19:50	3.8	-	CALM
20:00	3.7	-	CALM
20:10	3.8	-	CALM
20:20	3.6	-	CALM
20:30	3.7	-	CALM
20:40	3.5	-	CALM
20:50	3.5	west-northwest	0.6
21:00	3.6	southwest	0.6
21:10	3.6	west-northwest	0.6
21:20	3.8	-	CALM
21:30	3.7	northwest	0.6
21:40	3.6	west	1.1
21:50	3.7	-	CALM
22:00	3.9	west-southwest	1.1
22:10	3.7	west-northwest	0.7
22:20	3.7	-	CALM
22:30	3.5	-	CALM
22:40	3.7	-	CALM
22:50	3.7	west	1.1
23:00	3.8	west	1.0
23:10	3.7	-	CALM
23:20	3.7	-	CALM
23:30	3.6	-	CALM
23:40	3.5	-	CALM
23:50	3.7	-	CALM