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

○Information

○Measurement value list ： 2026/05/01(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	4.8
00:10	3.5	south	4.7
00:20	3.6	south	4.9
00:30	3.6	south	5.3
00:40	3.7	south	6.3
00:50	3.4	south	6.3
01:00	3.4	south	5.1
01:10	3.6	south	5.4
01:20	3.7	south	5.6
01:30	3.5	south	5.4
01:40	3.5	south	5.2
01:50	3.5	south	5.3
02:00	3.5	south	4.8
02:10	3.7	south	4.6
02:20	3.5	south	4.0
02:30	3.7	south	3.8
02:40	3.5	south	3.2
02:50	3.5	south	4.3
03:00	3.8	south	4.7
03:10	3.6	south	4.3
03:20	3.6	south	4.5
03:30	3.6	south	4.6
03:40	3.6	south	4.5
03:50	3.5	south-southeast	4.6
04:00	3.6	south	4.5
04:10	3.5	south	4.7
04:20	3.5	south	4.4
04:30	3.7	south	4.9
04:40	3.6	south	4.8
04:50	3.7	south	4.3
05:00	3.6	south	4.3
05:10	3.7	south	4.1
05:20	3.5	south-southeast	5.0
05:30	3.7	south-southeast	4.5
05:40	3.6	south-southeast	4.3
05:50	3.6	south-southeast	4.4
06:00	3.6	south-southeast	5.2
06:10	3.5	south-southeast	5.0
06:20	3.6	southeast	4.6
06:30	3.7	south-southeast	4.0
06:40	3.6	south-southeast	3.9
06:50	3.6	south-southeast	4.2
07:00	3.6	south-southeast	4.1
07:10	3.4	southeast	5.4
07:20	3.6	southeast	5.9
07:30	3.5	south-southeast	6.2
07:40	3.7	south-southeast	7.5
07:50	3.6	southeast	9.3
08:00	3.6	southeast	9.0
08:10	3.5	southeast	8.7
08:20	3.5	southeast	10.6
08:30	3.6	southeast	9.0
08:40	3.6	southeast	9.2
08:50	3.6	southeast	9.0
09:00	3.5	south-southeast	9.3
09:10	3.7	southeast	10.0
09:20	3.4	southeast	9.5
09:30	3.6	southeast	9.3
09:40	3.6	southeast	11.0
09:50	3.6	southeast	9.6
10:00	3.6	southeast	10.6
10:10	3.6	southeast	10.2
10:20	3.7	southeast	11.0
10:30	3.7	southeast	10.1
10:40	3.6	southeast	10.9
10:50	3.7	southeast	10.8
11:00	3.7	southeast	11.0
11:10	3.7	southeast	10.7
11:20	3.6	east-southeast	11.7
11:30	3.7	east-southeast	10.4
11:40	3.5	east-southeast	11.4
11:50	3.5	southeast	10.2
12:00	3.6	southeast	10.8
12:10	3.6	southeast	10.7
12:20	3.6	southeast	11.5
12:30	3.6	east-southeast	10.2
12:40	3.7	southeast	11.4
12:50	3.5	east-southeast	11.7
13:00	3.6	east-southeast	13.3
13:10	3.8	east	12.2
13:20	3.7	east	12.8
13:30	3.7	east	13.6
13:40	3.7	east-southeast	10.3
13:50	3.5	southeast	11.0
14:00	3.6	southeast	9.6
14:10	3.6	south-southeast	9.3
14:20	3.5	south-southeast	8.9
14:30	3.5	south-southeast	9.2
14:40	3.6	south-southeast	7.6
14:50	3.5	south-southeast	8.6
15:00	3.6	south-southeast	8.7
15:10	3.6	south-southeast	9.3
15:20	3.6	south-southeast	7.0
15:30	3.5	south-southeast	8.9
15:40	3.6	south-southeast	9.7
15:50	3.6	south-southeast	8.6
16:00	3.6	south-southeast	7.3
16:10	3.7	southeast	7.5
16:20	3.6	south-southeast	9.8
16:30	3.8	south-southeast	8.9
16:40	3.6	south-southeast	9.7
16:50	3.4	south	9.3
17:00	3.6	south-southeast	10.0
17:10	3.7	south-southeast	8.7
17:20	3.7	south-southeast	9.6
17:30	3.6	south-southeast	8.2
17:40	3.5	south-southeast	8.1
17:50	3.5	south	6.5
18:00	3.6	south-southeast	8.4
18:10	3.6	south-southeast	8.2
18:20	3.5	south-southeast	7.9
18:30	3.8	south	7.5
18:40	3.5	south	7.6
18:50	3.6	south	6.7
19:00	3.6	south	7.2
19:10	3.5	south-southeast	5.2
19:20	3.6	south	5.5
19:30	3.5	south	4.6
19:40	3.7	south-southwest	4.2
19:50	3.6	south-southwest	3.9
20:00	3.7	south-southwest	3.8
20:10	3.7	south-southwest	4.5
20:20	3.6	south-southwest	4.2
20:30	3.7	south	4.2
20:40	3.7	west-southwest	3.8
20:50	3.6	west	8.7
21:00	3.5	west	9.1
21:10	3.5	west	9.4
21:20	3.6	west-northwest	8.2
21:30	3.7	west	8.3
21:40	3.7	west-northwest	7.4
21:50	3.6	west	8.3
22:00	3.6	west	8.9
22:10	3.7	west-northwest	7.5
22:20	3.6	west-northwest	7.0
22:30	3.6	west-northwest	5.9
22:40	3.6	west-northwest	5.6
22:50	3.6	west	7.8
23:00	3.6	west-northwest	5.6
23:10	3.7	west-northwest	5.0
23:20	3.6	west	3.7
23:30	3.7	west-northwest	1.4
23:40	3.5	northeast	1.3
23:50	3.7	northeast	2.8