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

○Information

○Measurement value list ： 2026/04/09(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	5.9
00:10	3.5	south	6.3
00:20	3.6	south	6.7
00:30	3.8	south	5.7
00:40	3.6	south	4.9
00:50	3.7	south	4.1
01:00	3.6	south	3.5
01:10	3.4	south	4.1
01:20	3.6	south	4.2
01:30	3.6	south-southwest	3.8
01:40	3.6	south-southwest	4.4
01:50	3.5	south-southwest	4.2
02:00	3.6	south-southwest	4.1
02:10	3.6	south-southwest	5.9
02:20	3.5	south-southwest	6.6
02:30	3.6	south-southwest	6.5
02:40	3.6	south-southwest	5.6
02:50	3.5	south-southwest	6.2
03:00	3.6	south-southwest	6.1
03:10	3.4	south-southwest	7.1
03:20	3.6	south-southwest	5.9
03:30	3.4	south-southwest	6.3
03:40	3.5	south-southwest	5.6
03:50	3.7	south-southwest	6.0
04:00	3.5	south-southwest	5.5
04:10	3.5	south	4.8
04:20	3.7	south	4.1
04:30	3.5	south	4.0
04:40	3.6	south	5.0
04:50	3.6	south	4.4
05:00	3.5	south	3.4
05:10	3.5	south	5.3
05:20	3.5	south-southwest	6.1
05:30	3.7	south-southwest	6.8
05:40	3.9	south-southwest	7.1
05:50	3.6	south-southwest	6.7
06:00	3.4	south-southwest	6.3
06:10	3.6	south-southwest	5.8
06:20	3.8	south-southwest	5.3
06:30	3.6	south-southwest	3.7
06:40	3.5	south-southwest	3.1
06:50	3.6	south-southwest	4.3
07:00	3.6	south-southwest	6.1
07:10	3.6	south-southwest	6.0
07:20	3.6	southwest	6.2
07:30	3.4	south-southwest	5.5
07:40	3.5	southwest	6.5
07:50	3.8	southwest	5.8
08:00	3.5	southwest	6.9
08:10	3.6	south-southwest	4.3
08:20	3.5	south-southwest	4.5
08:30	3.6	south	3.3
08:40	3.5	south-southwest	3.9
08:50	3.6	south-southwest	4.5
09:00	3.6	south-southwest	5.2
09:10	3.5	south	4.5
09:20	3.6	south	5.6
09:30	3.6	south-southwest	6.1
09:40	3.7	south	5.2
09:50	3.6	south-southwest	6.7
10:00	3.5	south-southwest	6.0
10:10	3.6	south	5.4
10:20	3.6	south-southeast	5.4
10:30	3.7	south-southeast	8.3
10:40	3.6	south-southeast	9.3
10:50	3.6	south-southeast	10.1
11:00	3.6	south-southeast	9.6
11:10	3.5	south-southeast	10.8
11:20	3.6	south-southeast	9.4
11:30	3.5	south-southeast	9.2
11:40	3.6	south-southeast	9.1
11:50	3.7	south-southeast	7.3
12:00	3.6	south-southeast	11.3
12:10	3.6	south-southeast	9.6
12:20	3.6	south-southeast	9.5
12:30	3.6	south-southeast	10.9
12:40	3.6	south-southeast	12.6
12:50	3.6	southeast	10.9
13:00	3.5	south-southeast	10.7
13:10	3.7	south-southeast	10.9
13:20	3.7	south-southeast	10.7
13:30	3.6	south-southeast	11.9
13:40	3.6	south-southeast	12.6
13:50	3.5	south-southeast	12.0
14:00	3.5	south-southeast	10.9
14:10	3.7	south-southeast	11.0
14:20	3.5	south-southeast	11.2
14:30	3.6	south-southeast	10.9
14:40	3.7	south-southeast	10.8
14:50	3.6	south-southeast	10.6
15:00	3.6	south-southeast	9.7
15:10	3.6	south-southeast	9.0
15:20	3.7	south-southeast	9.7
15:30	3.6	south-southeast	9.1
15:40	3.6	south-southeast	8.6
15:50	3.5	south-southeast	8.4
16:00	3.5	south-southeast	8.3
16:10	3.6	south-southeast	8.2
16:20	3.7	south-southeast	7.9
16:30	3.7	south-southeast	7.1
16:40	3.5	south-southeast	8.0
16:50	3.5	south-southeast	8.0
17:00	3.6	south-southeast	7.0
17:10	3.7	south-southeast	6.3
17:20	3.7	south-southeast	6.2
17:30	3.5	south-southeast	6.7
17:40	3.7	south-southeast	6.5
17:50	3.6	south	6.4
18:00	3.6	south-southeast	5.6
18:10	3.7	south-southeast	5.4
18:20	3.6	south-southeast	5.9
18:30	3.4	south-southeast	4.9
18:40	3.6	south-southeast	5.0
18:50	3.5	south-southeast	4.7
19:00	3.6	south-southeast	4.5
19:10	3.5	south-southeast	4.1
19:20	3.5	south-southeast	4.9
19:30	3.5	south-southeast	5.0
19:40	3.7	south-southeast	5.0
19:50	3.6	south	3.8
20:00	3.6	south	5.0
20:10	3.6	south	5.5
20:20	3.6	south	6.0
20:30	3.5	south-southeast	5.5
20:40	3.6	south-southeast	5.0
20:50	3.6	south-southeast	5.6
21:00	3.5	south-southeast	6.5
21:10	3.8	south-southeast	6.2
21:20	3.5	south	5.8
21:30	3.4	south	5.4
21:40	3.7	south-southeast	4.4
21:50	3.6	south-southeast	4.5
22:00	3.6	south-southeast	3.8
22:10	3.6	south	4.4
22:20	3.7	south	4.6
22:30	3.6	south	3.9
22:40	3.6	south-southeast	4.2
22:50	3.6	south-southeast	3.3
23:00	3.4	south-southeast	3.7
23:10	3.7	south-southeast	2.7
23:20	3.5	south-southeast	2.9
23:30	3.5	south	4.4
23:40	3.7	south-southeast	5.0
23:50	3.5	south-southeast	4.5