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

○Information

○Measurement value list ： 2026/05/12(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	3.5	south	5.0
00:10	3.7	south	4.9
00:20	3.8	south	4.8
00:30	3.4	south	4.7
00:40	3.5	south	4.9
00:50	3.7	south	5.1
01:00	3.5	south	4.5
01:10	3.7	south	4.5
01:20	3.6	south-southwest	3.7
01:30	3.5	south-southwest	4.4
01:40	3.6	south-southwest	4.9
01:50	3.7	south	5.0
02:00	3.5	south	5.3
02:10	3.6	south	5.3
02:20	3.5	south	5.3
02:30	3.6	south	5.2
02:40	3.4	south	5.2
02:50	3.5	south	4.7
03:00	3.7	south	4.8
03:10	3.6	south	5.0
03:20	3.6	south	5.4
03:30	3.5	south	5.1
03:40	3.6	south	5.2
03:50	3.5	south	5.3
04:00	3.6	south	5.0
04:10	3.4	south	4.2
04:20	3.7	south	4.1
04:30	3.6	south	4.5
04:40	3.5	south	4.0
04:50	3.6	south	3.7
05:00	3.6	south	4.0
05:10	3.4	south	3.2
05:20	3.6	south	3.5
05:30	3.8	south	3.8
05:40	3.6	south	4.0
05:50	3.5	south-southwest	3.9
06:00	3.5	south-southwest	3.5
06:10	3.5	south-southwest	3.0
06:20	3.5	south	2.5
06:30	3.5	south-southwest	2.0
06:40	3.5	south-southwest	1.8
06:50	3.7	south-southwest	1.6
07:00	3.7	south	1.2
07:10	3.5	south	1.4
07:20	3.5	south-southeast	1.5
07:30	3.6	southeast	1.3
07:40	3.6	southeast	1.7
07:50	3.7	south-southeast	3.2
08:00	3.6	south-southeast	3.0
08:10	3.9	south-southeast	3.0
08:20	3.6	south-southeast	3.2
08:30	3.5	south-southeast	3.2
08:40	3.7	south-southeast	3.7
08:50	3.7	south-southeast	4.7
09:00	3.6	southeast	4.3
09:10	3.7	south-southeast	4.9
09:20	3.6	south-southeast	5.4
09:30	3.6	south-southeast	6.2
09:40	3.5	south-southeast	5.1
09:50	3.7	south-southeast	6.3
10:00	3.6	south-southeast	6.3
10:10	3.6	southeast	5.7
10:20	3.5	south-southeast	6.2
10:30	3.6	south-southeast	6.2
10:40	3.8	south-southeast	6.9
10:50	3.4	south-southeast	8.2
11:00	3.6	south-southeast	7.2
11:10	3.5	south-southeast	7.6
11:20	3.6	south-southeast	7.5
11:30	3.5	south-southeast	7.4
11:40	3.5	south-southeast	7.6
11:50	3.6	south-southeast	7.1
12:00	3.6	south-southeast	7.2
12:10	3.6	south-southeast	7.5
12:20	3.6	south-southeast	9.2
12:30	3.5	south-southeast	7.9
12:40	3.6	south-southeast	8.9
12:50	3.6	southeast	8.2
13:00	3.4	south-southeast	7.6
13:10	3.6	south-southeast	9.3
13:20	3.6	south-southeast	8.0
13:30	3.7	south-southeast	10.0
13:40	3.7	south-southeast	7.8
13:50	3.6	south-southeast	6.7
14:00	3.5	southeast	8.8
14:10	3.6	south-southeast	7.2
14:20	3.8	southeast	8.1
14:30	3.6	south-southeast	8.1
14:40	3.6	southeast	7.7
14:50	3.6	south-southeast	9.7
15:00	3.6	southeast	8.1
15:10	3.6	south-southeast	7.9
15:20	3.6	southeast	8.5
15:30	3.5	south-southeast	7.3
15:40	3.7	southeast	8.1
15:50	3.5	south-southeast	8.0
16:00	3.6	south-southeast	8.7
16:10	3.7	south-southeast	8.6
16:20	3.6	south-southeast	8.6
16:30	3.5	south-southeast	8.5
16:40	3.8	south-southeast	9.3
16:50	3.6	south-southeast	8.7
17:00	3.8	south-southeast	8.5
17:10	3.6	south-southeast	8.2
17:20	3.7	south-southeast	7.8
17:30	3.6	south-southeast	8.4
17:40	3.6	south-southeast	7.4
17:50	3.4	south-southeast	8.2
18:00	3.6	south-southeast	8.4
18:10	3.6	south-southeast	8.0
18:20	3.6	south-southeast	7.6
18:30	3.8	south-southeast	7.2
18:40	3.5	south-southeast	6.9
18:50	3.5	south-southeast	6.5
19:00	3.6	south-southeast	7.3
19:10	3.5	south-southeast	6.4
19:20	3.6	south-southeast	6.3
19:30	3.5	south-southeast	5.9
19:40	3.4	south-southeast	5.7
19:50	3.3	south-southeast	4.9
20:00	3.5	south	5.5
20:10	3.6	south-southeast	5.0
20:20	3.6	south-southeast	5.4
20:30	3.6	south	5.7
20:40	3.6	south	5.3
20:50	3.6	south	5.4
21:00	3.6	south	5.6
21:10	3.6	south	5.4
21:20	3.5	south	4.7
21:30	3.6	south	4.4
21:40	3.6	south	4.3
21:50	3.7	south	4.3
22:00	3.9	south	4.7
22:10	3.7	south	4.6
22:20	3.6	south	4.9
22:30	3.7	south	4.6
22:40	3.5	south	4.9
22:50	3.5	south	5.8
23:00	3.6	south	5.5
23:10	3.6	south	5.0
23:20	3.4	south	5.1
23:30	3.5	south	4.6
23:40	3.7	south	4.3
23:50	3.6	south	4.2