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

○Information

○Measurement value list ： 2026/05/18(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	north-northwest	3.4
00:10	3.5	north-northwest	3.8
00:20	3.6	north-northwest	3.2
00:30	3.7	north-northwest	3.0
00:40	3.7	north	3.2
00:50	3.6	north-northwest	3.2
01:00	3.6	north-northwest	3.3
01:10	3.6	north-northwest	3.3
01:20	3.5	north-northwest	3.3
01:30	3.7	north-northwest	2.7
01:40	3.6	north-northwest	3.0
01:50	3.6	north-northwest	2.4
02:00	3.6	north-northwest	2.3
02:10	3.7	north-northwest	2.2
02:20	3.5	north-northwest	2.5
02:30	3.5	north	2.7
02:40	3.4	north	2.0
02:50	3.8	north	1.8
03:00	3.6	north	1.9
03:10	3.4	north	1.9
03:20	3.6	north	2.0
03:30	3.3	north	2.8
03:40	3.8	north	2.9
03:50	3.6	north	2.9
04:00	3.7	north-northwest	3.2
04:10	3.5	north-northwest	3.2
04:20	3.6	north-northwest	2.5
04:30	3.7	north-northwest	2.5
04:40	3.6	north-northwest	2.3
04:50	3.7	north	2.2
05:00	3.6	north-northwest	1.7
05:10	3.5	north	1.3
05:20	3.6	north-northeast	1.0
05:30	3.6	north-northeast	0.8
05:40	3.7	northeast	0.8
05:50	3.4	northeast	0.7
06:00	3.6	east	0.7
06:10	3.6	southeast	1.4
06:20	3.7	south-southeast	1.4
06:30	3.5	south-southeast	1.4
06:40	3.6	south-southeast	0.9
06:50	3.7	south	1.6
07:00	3.6	south-southeast	1.6
07:10	3.5	south	0.7
07:20	3.7	east-southeast	1.1
07:30	3.5	southeast	1.5
07:40	3.7	south-southeast	1.1
07:50	3.7	east-southeast	1.3
08:00	3.6	south-southeast	1.9
08:10	3.5	southeast	1.9
08:20	3.6	southeast	2.1
08:30	3.6	southeast	2.4
08:40	3.5	southeast	2.8
08:50	3.7	east-southeast	2.9
09:00	3.5	southeast	3.3
09:10	3.5	southeast	3.4
09:20	3.6	southeast	3.5
09:30	3.6	southeast	3.9
09:40	3.4	southeast	3.9
09:50	3.6	southeast	3.4
10:00	3.7	southeast	3.4
10:10	3.5	southeast	3.9
10:20	3.6	southeast	4.1
10:30	3.5	southeast	4.7
10:40	3.4	southeast	4.6
10:50	3.6	southeast	4.4
11:00	3.6	southeast	4.5
11:10	3.6	southeast	4.2
11:20	3.7	southeast	4.9
11:30	3.7	southeast	5.4
11:40	3.4	south-southeast	4.6
11:50	3.5	southeast	5.0
12:00	3.6	south-southeast	5.1
12:10	3.4	south-southeast	5.3
12:20	3.6	southeast	5.5
12:30	3.5	southeast	5.2
12:40	3.6	southeast	5.4
12:50	3.6	southeast	5.9
13:00	3.7	south-southeast	5.3
13:10	3.7	southeast	5.8
13:20	3.7	southeast	5.3
13:30	3.7	southeast	5.5
13:40	3.7	southeast	4.7
13:50	3.7	southeast	5.5
14:00	3.5	southeast	5.2
14:10	3.5	southeast	4.0
14:20	3.4	southeast	4.5
14:30	3.7	south-southeast	4.5
14:40	3.5	southeast	4.4
14:50	3.6	southeast	3.4
15:00	3.4	south-southeast	3.5
15:10	3.7	south-southeast	3.8
15:20	3.5	south-southeast	4.8
15:30	3.6	south-southeast	4.2
15:40	3.6	south-southeast	2.7
15:50	3.5	south-southeast	2.1
16:00	3.6	south-southeast	2.1
16:10	3.5	south	2.7
16:20	3.5	south	2.3
16:30	3.5	south-southeast	1.8
16:40	3.6	south	1.9
16:50	3.6	south	1.6
17:00	3.5	south	3.5
17:10	3.4	south	3.3
17:20	3.5	south	2.2
17:30	3.7	south-southwest	2.7
17:40	3.6	south	2.8
17:50	3.5	south-southwest	3.4
18:00	3.6	south	4.2
18:10	3.5	south-southwest	4.4
18:20	3.7	south	3.0
18:30	3.6	south-southwest	3.6
18:40	3.5	south-southwest	4.2
18:50	3.5	south-southwest	4.6
19:00	3.6	south-southwest	3.6
19:10	3.7	south-southwest	2.7
19:20	3.6	south-southwest	3.1
19:30	3.6	south-southwest	3.1
19:40	3.5	west-southwest	0.6
19:50	3.6	-	CALM
20:00	3.5	south-southwest	0.6
20:10	3.6	-	CALM
20:20	3.6	east	1.1
20:30	3.5	southeast	0.6
20:40	3.9	southeast	0.6
20:50	3.5	south	1.3
21:00	3.6	south-southeast	1.3
21:10	3.6	southeast	1.2
21:20	3.5	southeast	1.7
21:30	3.6	south-southeast	1.7
21:40	3.7	south-southeast	1.5
21:50	3.6	south	1.5
22:00	3.6	south-southeast	1.6
22:10	3.6	south	2.0
22:20	3.7	south-southwest	2.9
22:30	3.7	southwest	3.6
22:40	3.5	southwest	3.6
22:50	3.6	southwest	3.8
23:00	3.6	west-southwest	2.6
23:10	3.5	southwest	1.8
23:20	3.4	west	1.1
23:30	3.7	west-southwest	2.5
23:40	3.4	southwest	2.9
23:50	3.8	south-southwest	3.7