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

○Information

○Measurement value list ： 2026/03/31(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	north-northwest	1.2
00:10	3.7	northwest	2.5
00:20	3.7	northwest	2.2
00:30	3.6	northwest	2.4
00:40	3.6	northwest	1.7
00:50	3.7	west-northwest	1.0
01:00	3.6	west-southwest	1.3
01:10	3.7	-	CALM
01:20	3.5	-	CALM
01:30	3.7	northwest	0.6
01:40	3.5	west-northwest	0.7
01:50	3.5	-	CALM
02:00	3.6	-	CALM
02:10	3.6	north-northeast	0.6
02:20	3.6	east-northeast	0.6
02:30	3.6	-	CALM
02:40	3.5	south	0.6
02:50	3.6	-	CALM
03:00	3.8	southeast	1.3
03:10	3.6	south-southeast	1.1
03:20	3.7	south-southeast	1.3
03:30	3.7	south-southeast	1.3
03:40	3.6	-	CALM
03:50	3.7	-	CALM
04:00	3.7	south-southeast	1.2
04:10	3.8	south	1.7
04:20	3.6	south	1.5
04:30	3.6	south-southeast	1.5
04:40	3.5	south-southeast	0.7
04:50	3.8	south	1.2
05:00	3.6	south-southeast	0.9
05:10	3.7	south-southwest	0.7
05:20	3.6	-	CALM
05:30	3.6	east-southeast	1.0
05:40	3.8	south-southeast	2.3
05:50	3.6	south-southeast	2.2
06:00	3.7	south-southeast	2.2
06:10	3.7	southeast	2.6
06:20	3.6	southeast	2.7
06:30	3.7	southeast	2.0
06:40	3.7	southeast	2.4
06:50	3.8	southeast	2.4
07:00	3.7	southeast	1.2
07:10	3.8	east-southeast	0.8
07:20	3.5	southeast	2.0
07:30	3.6	south-southeast	2.1
07:40	3.6	south-southeast	2.3
07:50	3.7	southeast	3.6
08:00	3.8	southeast	3.9
08:10	3.6	southeast	3.9
08:20	3.6	south-southeast	4.3
08:30	3.6	south-southeast	5.0
08:40	3.6	south-southeast	6.0
08:50	3.6	south-southeast	5.9
09:00	3.8	south-southeast	6.9
09:10	3.8	south-southeast	8.5
09:20	3.6	south-southeast	8.5
09:30	3.7	south-southeast	8.4
09:40	3.6	south-southeast	7.4
09:50	3.6	south-southeast	7.4
10:00	3.6	south	6.9
10:10	3.7	south	7.2
10:20	3.6	south	7.5
10:30	3.7	south	7.9
10:40	3.6	south-southeast	7.0
10:50	3.7	south	7.6
11:00	3.6	south	6.0
11:10	3.8	south-southeast	6.0
11:20	3.7	south-southeast	6.6
11:30	3.7	south-southeast	5.9
11:40	3.7	south-southeast	7.0
11:50	3.8	south-southeast	7.3
12:00	3.7	south-southeast	7.6
12:10	3.6	south	10.4
12:20	3.5	south	9.8
12:30	3.7	south	9.4
12:40	3.8	south	9.9
12:50	3.8	south-southeast	9.2
13:00	3.5	south-southeast	9.6
13:10	3.7	south-southeast	9.2
13:20	3.7	south-southeast	9.7
13:30	3.6	south	9.3
13:40	3.7	south	10.4
13:50	3.5	south-southeast	8.8
14:00	3.7	south-southeast	8.5
14:10	3.6	south	9.0
14:20	3.5	south	8.9
14:30	3.7	south	8.8
14:40	3.7	south-southeast	9.4
14:50	3.6	south-southeast	9.1
15:00	3.7	south-southeast	8.7
15:10	3.9	south-southeast	9.3
15:20	3.7	south-southeast	8.1
15:30	3.7	south-southeast	9.7
15:40	3.8	south-southeast	9.6
15:50	3.6	south-southeast	9.2
16:00	3.6	south-southeast	9.8
16:10	3.7	south-southeast	10.4
16:20	3.8	south-southeast	8.5
16:30	3.6	southeast	8.3
16:40	3.7	south-southeast	10.9
16:50	3.6	south-southeast	9.6
17:00	3.9	south-southeast	9.0
17:10	3.6	south	8.9
17:20	3.6	south	9.1
17:30	3.5	south	7.6
17:40	3.6	south	8.3
17:50	3.8	south-southeast	8.0
18:00	3.7	south-southeast	8.2
18:10	3.8	south-southeast	6.1
18:20	3.8	south-southeast	5.5
18:30	3.6	south-southeast	6.0
18:40	3.7	south	6.1
18:50	3.7	south	6.3
19:00	3.7	south	6.7
19:10	3.5	south	6.9
19:20	3.7	south-southeast	7.1
19:30	3.8	south	7.4
19:40	3.7	south	7.5
19:50	3.7	south	8.5
20:00	3.8	south	7.2
20:10	3.7	south	7.3
20:20	3.6	south	7.8
20:30	3.6	south	7.5
20:40	3.6	south	6.0
20:50	3.5	south-southwest	6.3
21:00	3.7	west-southwest	5.7
21:10	3.7	west	5.3
21:20	3.7	west-southwest	5.6
21:30	3.6	west-southwest	7.2
21:40	3.6	southwest	6.9
21:50	3.6	southwest	7.2
22:00	3.5	west-southwest	7.1
22:10	3.8	west-southwest	5.7
22:20	3.7	west-southwest	6.2
22:30	3.7	west-southwest	7.6
22:40	3.6	west	5.9
22:50	3.8	west	6.0
23:00	3.6	west	7.7
23:10	3.6	west	8.6
23:20	3.6	west	8.2
23:30	3.5	west	6.5
23:40	3.7	west	6.2
23:50	3.7	west	7.6