Radiation doses in the air / Measurement results by the hour (Kodaira)

We continuously measure radiation doses in the air (air absorbed doses per hour) at monitoring posts. Measurement results can be obtained by the minute, and we gather measurement data and then display them by the hour or by the day.

The maximum value indicates the largest value measured in each time slot (during the hour or during the day), the minimum value the smallest value measured in each time slot, and the average value is the average value for each time slot.

Shown in µGy/h (microgray per hour)

Gray indicates an amount of energy (absorbed dose) when radiation hits a material object, and 1 gray (Gy) of radiation doses in the air can be converted to 1 sievert (Sv).

Measurement time Dose rate
μGy/h (microgray per hour)
Maximum value Minimum value Average value
04:01-05:00, Fri., 21 Nov. 0.0396 0.0335 0.0362
03:01-04:00, Fri., 21 Nov. 0.0381 0.0336 0.0358
02:01-03:00, Fri., 21 Nov. 0.0377 0.0332 0.0356
01:01-02:00, Fri., 21 Nov. 0.0384 0.0326 0.0356
00:01-01:00, Fri., 21 Nov. 0.0383 0.0339 0.0357
23:01-24:00, Thu., 20 Nov. 0.0378 0.0331 0.0352
22:01-23:00, Thu., 20 Nov. 0.0369 0.0331 0.0350
21:01-22:00, Thu., 20 Nov. 0.0369 0.0322 0.0350
20:01-21:00, Thu., 20 Nov. 0.0372 0.0323 0.0343
19:01-20:00, Thu., 20 Nov. 0.0364 0.0305 0.0337
18:01-19:00, Thu., 20 Nov. 0.0367 0.0312 0.0338
17:01-18:00, Thu., 20 Nov. 0.0357 0.0315 0.0340
16:01-17:00, Thu., 20 Nov. 0.0368 0.0308 0.0338
15:01-16:00, Thu., 20 Nov. 0.0363 0.0315 0.0335
14:01-15:00, Thu., 20 Nov. 0.0368 0.0317 0.0341
13:01-14:00, Thu., 20 Nov. 0.0367 0.0324 0.0344
12:01-13:00, Thu., 20 Nov. 0.0361 0.0316 0.0343
11:01-12:00, Thu., 20 Nov. 0.0367 0.0309 0.0346
10:01-11:00, Thu., 20 Nov. 0.0381 0.0333 0.0358
09:01-10:00, Thu., 20 Nov. 0.0383 0.0339 0.0362
08:01-09:00, Thu., 20 Nov. 0.0388 0.0339 0.0363
07:01-08:00, Thu., 20 Nov. 0.0383 0.0330 0.0362
06:01-07:00, Thu., 20 Nov. 0.0374 0.0336 0.0354
05:01-06:00, Thu., 20 Nov. 0.0374 0.0323 0.0353
04:01-05:00, Thu., 20 Nov. 0.0379 0.0324 0.0350
03:01-04:00, Thu., 20 Nov. 0.0369 0.0326 0.0349
02:01-03:00, Thu., 20 Nov. 0.0367 0.0317 0.0348
01:01-02:00, Thu., 20 Nov. 0.0372 0.0324 0.0346
00:01-01:00, Thu., 20 Nov. 0.0370 0.0326 0.0346
23:01-24:00, Wed., 19 Nov. 0.0365 0.0319 0.0345
22:01-23:00, Wed., 19 Nov. 0.0375 0.0327 0.0350
21:01-22:00, Wed., 19 Nov. 0.0377 0.0325 0.0348
20:01-21:00, Wed., 19 Nov. 0.0372 0.0323 0.0344
19:01-20:00, Wed., 19 Nov. 0.0370 0.0323 0.0345
18:01-19:00, Wed., 19 Nov. 0.0366 0.0313 0.0342
17:01-18:00, Wed., 19 Nov. 0.0363 0.0313 0.0338
16:01-17:00, Wed., 19 Nov. 0.0357 0.0308 0.0338
15:01-16:00, Wed., 19 Nov. 0.0361 0.0306 0.0336
14:01-15:00, Wed., 19 Nov. 0.0365 0.0314 0.0338
13:01-14:00, Wed., 19 Nov. 0.0363 0.0315 0.0339
12:01-13:00, Wed., 19 Nov. 0.0357 0.0310 0.0337
11:01-12:00, Wed., 19 Nov. 0.0364 0.0319 0.0338
10:01-11:00, Wed., 19 Nov. 0.0369 0.0315 0.0342
09:01-10:00, Wed., 19 Nov. 0.0358 0.0308 0.0340
08:01-09:00, Wed., 19 Nov. 0.0360 0.0315 0.0338
07:01-08:00, Wed., 19 Nov. 0.0377 0.0314 0.0338
06:01-07:00, Wed., 19 Nov. 0.0359 0.0318 0.0339
05:01-06:00, Wed., 19 Nov. 0.0375 0.0308 0.0338
04:01-05:00, Wed., 19 Nov. 0.0382 0.0319 0.0339
03:01-04:00, Wed., 19 Nov. 0.0361 0.0313 0.0341
02:01-03:00, Wed., 19 Nov. 0.0358 0.0306 0.0339
01:01-02:00, Wed., 19 Nov. 0.0359 0.0321 0.0343
00:01-01:00, Wed., 19 Nov. 0.0367 0.0325 0.0344
23:01-24:00, Tue., 18 Nov. 0.0369 0.0318 0.0343
22:01-23:00, Tue., 18 Nov. 0.0363 0.0320 0.0341
21:01-22:00, Tue., 18 Nov. 0.0366 0.0312 0.0342
20:01-21:00, Tue., 18 Nov. 0.0367 0.0308 0.0341
19:01-20:00, Tue., 18 Nov. 0.0377 0.0321 0.0351
18:01-19:00, Tue., 18 Nov. 0.0370 0.0330 0.0354
17:01-18:00, Tue., 18 Nov. 0.0367 0.0315 0.0342
16:01-17:00, Tue., 18 Nov. 0.0364 0.0320 0.0344
15:01-16:00, Tue., 18 Nov. 0.0364 0.0329 0.0344
14:01-15:00, Tue., 18 Nov. 0.0369 0.0322 0.0342
13:01-14:00, Tue., 18 Nov. 0.0383 0.0322 0.0352
12:01-13:00, Tue., 18 Nov. 0.0381 0.0324 0.0348
11:01-12:00, Tue., 18 Nov. 0.0374 0.0320 0.0349
10:01-11:00, Tue., 18 Nov. 0.0377 0.0323 0.0346
09:01-10:00, Tue., 18 Nov. 0.0376 0.0312 0.0346
08:01-09:00, Tue., 18 Nov. 0.0370 0.0327 0.0346
07:01-08:00, Tue., 18 Nov. 0.0368 0.0315 0.0341
06:01-07:00, Tue., 18 Nov. 0.0362 0.0321 0.0342
05:01-06:00, Tue., 18 Nov. 0.0363 0.0318 0.0341
04:01-05:00, Tue., 18 Nov. 0.0368 0.0311 0.0341
03:01-04:00, Tue., 18 Nov. 0.0363 0.0314 0.0339
02:01-03:00, Tue., 18 Nov. 0.0356 0.0318 0.0339
01:01-02:00, Tue., 18 Nov. 0.0354 0.0315 0.0339
00:01-01:00, Tue., 18 Nov. 0.0373 0.0317 0.0339
23:01-24:00, Mon., 17 Nov. 0.0360 0.0309 0.0338
22:01-23:00, Mon., 17 Nov. 0.0363 0.0314 0.0338
21:01-22:00, Mon., 17 Nov. 0.0359 0.0322 0.0338
20:01-21:00, Mon., 17 Nov. 0.0359 0.0317 0.0337
19:01-20:00, Mon., 17 Nov. 0.0362 0.0316 0.0339
18:01-19:00, Mon., 17 Nov. 0.0355 0.0307 0.0335
17:01-18:00, Mon., 17 Nov. 0.0360 0.0315 0.0333
16:01-17:00, Mon., 17 Nov. 0.0358 0.0315 0.0335
15:01-16:00, Mon., 17 Nov. 0.0362 0.0315 0.0337
14:01-15:00, Mon., 17 Nov. 0.0362 0.0324 0.0342
13:01-14:00, Mon., 17 Nov. 0.0359 0.0314 0.0338
12:01-13:00, Mon., 17 Nov. 0.0365 0.0315 0.0337
11:01-12:00, Mon., 17 Nov. 0.0362 0.0317 0.0335
10:01-11:00, Mon., 17 Nov. 0.0357 0.0313 0.0338
09:01-10:00, Mon., 17 Nov. 0.0355 0.0311 0.0336
08:01-09:00, Mon., 17 Nov. 0.0367 0.0322 0.0348
07:01-08:00, Mon., 17 Nov. 0.0370 0.0327 0.0349
06:01-07:00, Mon., 17 Nov. 0.0373 0.0322 0.0347
05:01-06:00, Mon., 17 Nov. 0.0370 0.0326 0.0352
04:01-05:00, Mon., 17 Nov. 0.0382 0.0336 0.0353
03:01-04:00, Mon., 17 Nov. 0.0372 0.0329 0.0352
02:01-03:00, Mon., 17 Nov. 0.0376 0.0325 0.0348
01:01-02:00, Mon., 17 Nov. 0.0377 0.0325 0.0348
00:01-01:00, Mon., 17 Nov. 0.0364 0.0322 0.0342
23:01-24:00, Sun., 16 Nov. 0.0367 0.0322 0.0344
22:01-23:00, Sun., 16 Nov. 0.0361 0.0322 0.0341
21:01-22:00, Sun., 16 Nov. 0.0360 0.0316 0.0336
20:01-21:00, Sun., 16 Nov. 0.0357 0.0315 0.0335
19:01-20:00, Sun., 16 Nov. 0.0362 0.0318 0.0334
18:01-19:00, Sun., 16 Nov. 0.0364 0.0311 0.0334
17:01-18:00, Sun., 16 Nov. 0.0352 0.0302 0.0331
16:01-17:00, Sun., 16 Nov. 0.0363 0.0308 0.0334
15:01-16:00, Sun., 16 Nov. 0.0369 0.0308 0.0335
14:01-15:00, Sun., 16 Nov. 0.0355 0.0308 0.0334
13:01-14:00, Sun., 16 Nov. 0.0362 0.0317 0.0337
12:01-13:00, Sun., 16 Nov. 0.0362 0.0318 0.0341
11:01-12:00, Sun., 16 Nov. 0.0368 0.0317 0.0340
10:01-11:00, Sun., 16 Nov. 0.0361 0.0315 0.0339
09:01-10:00, Sun., 16 Nov. 0.0370 0.0319 0.0346
08:01-09:00, Sun., 16 Nov. 0.0379 0.0322 0.0350
07:01-08:00, Sun., 16 Nov. 0.0370 0.0323 0.0346
06:01-07:00, Sun., 16 Nov. 0.0381 0.0328 0.0347
05:01-06:00, Sun., 16 Nov. 0.0363 0.0308 0.0345
04:01-05:00, Sun., 16 Nov. 0.0368 0.0313 0.0343
03:01-04:00, Sun., 16 Nov. 0.0366 0.0317 0.0342
02:01-03:00, Sun., 16 Nov. 0.0364 0.0313 0.0339
01:01-02:00, Sun., 16 Nov. 0.0363 0.0320 0.0339
00:01-01:00, Sun., 16 Nov. 0.0366 0.0311 0.0338
23:01-24:00, Sat., 15 Nov. 0.0360 0.0318 0.0341
22:01-23:00, Sat., 15 Nov. 0.0359 0.0308 0.0338
21:01-22:00, Sat., 15 Nov. 0.0380 0.0309 0.0339
20:01-21:00, Sat., 15 Nov. 0.0354 0.0313 0.0333
19:01-20:00, Sat., 15 Nov. 0.0356 0.0309 0.0335
18:01-19:00, Sat., 15 Nov. 0.0370 0.0320 0.0341
17:01-18:00, Sat., 15 Nov. 0.0355 0.0316 0.0335
16:01-17:00, Sat., 15 Nov. 0.0360 0.0320 0.0337
15:01-16:00, Sat., 15 Nov. 0.0363 0.0318 0.0341
14:01-15:00, Sat., 15 Nov. 0.0361 0.0321 0.0341
13:01-14:00, Sat., 15 Nov. 0.0369 0.0316 0.0340
12:01-13:00, Sat., 15 Nov. 0.0370 0.0318 0.0342
11:01-12:00, Sat., 15 Nov. 0.0359 0.0309 0.0339
10:01-11:00, Sat., 15 Nov. 0.0355 0.0311 0.0334
09:01-10:00, Sat., 15 Nov. 0.0360 0.0316 0.0339
08:01-09:00, Sat., 15 Nov. 0.0370 0.0315 0.0340
07:01-08:00, Sat., 15 Nov. 0.0372 0.0318 0.0342
06:01-07:00, Sat., 15 Nov. 0.0358 0.0320 0.0340
05:01-06:00, Sat., 15 Nov. 0.0368 0.0324 0.0343
04:01-05:00, Sat., 15 Nov. 0.0367 0.0320 0.0343
03:01-04:00, Sat., 15 Nov. 0.0362 0.0317 0.0338
02:01-03:00, Sat., 15 Nov. 0.0360 0.0315 0.0339
01:01-02:00, Sat., 15 Nov. 0.0361 0.0317 0.0335
00:01-01:00, Sat., 15 Nov. 0.0363 0.0318 0.0336
23:01-24:00, Fri., 14 Nov. 0.0355 0.0311 0.0335
22:01-23:00, Fri., 14 Nov. 0.0369 0.0318 0.0337
21:01-22:00, Fri., 14 Nov. 0.0357 0.0313 0.0334
20:01-21:00, Fri., 14 Nov. 0.0359 0.0305 0.0334
19:01-20:00, Fri., 14 Nov. 0.0360 0.0305 0.0331
18:01-19:00, Fri., 14 Nov. 0.0354 0.0313 0.0332
17:01-18:00, Fri., 14 Nov. 0.0353 0.0318 0.0335
16:01-17:00, Fri., 14 Nov. 0.0363 0.0315 0.0338
15:01-16:00, Fri., 14 Nov. 0.0373 0.0312 0.0339
14:01-15:00, Fri., 14 Nov. 0.0364 0.0315 0.0337
13:01-14:00, Fri., 14 Nov. 0.0370 0.0312 0.0341
12:01-13:00, Fri., 14 Nov. 0.0370 0.0326 0.0345
11:01-12:00, Fri., 14 Nov. 0.0367 0.0319 0.0346
10:01-11:00, Fri., 14 Nov. 0.0362 0.0326 0.0346
09:01-10:00, Fri., 14 Nov. 0.0377 0.0325 0.0352
08:01-09:00, Fri., 14 Nov. 0.0385 0.0336 0.0355
07:01-08:00, Fri., 14 Nov. 0.0393 0.0326 0.0355
06:01-07:00, Fri., 14 Nov. 0.0380 0.0337 0.0359
05:01-06:00, Fri., 14 Nov. 0.0388 0.0339 0.0362
04:01-05:00, Fri., 14 Nov. 0.0386 0.0330 0.0355
03:01-04:00, Fri., 14 Nov. 0.0369 0.0336 0.0353
02:01-03:00, Fri., 14 Nov. 0.0374 0.0325 0.0353
01:01-02:00, Fri., 14 Nov. 0.0379 0.0330 0.0356
00:01-01:00, Fri., 14 Nov. 0.0389 0.0332 0.0356
23:01-24:00, Thu., 13 Nov. 0.0376 0.0342 0.0359
22:01-23:00, Thu., 13 Nov. 0.0387 0.0338 0.0358
21:01-22:00, Thu., 13 Nov. 0.0378 0.0337 0.0356
20:01-21:00, Thu., 13 Nov. 0.0391 0.0327 0.0356
19:01-20:00, Thu., 13 Nov. 0.0377 0.0332 0.0355
18:01-19:00, Thu., 13 Nov. 0.0381 0.0322 0.0352
17:01-18:00, Thu., 13 Nov. 0.0375 0.0325 0.0351
16:01-17:00, Thu., 13 Nov. 0.0376 0.0325 0.0352
15:01-16:00, Thu., 13 Nov. 0.0379 0.0325 0.0353
14:01-15:00, Thu., 13 Nov. 0.0373 0.0329 0.0353
13:01-14:00, Thu., 13 Nov. 0.0373 0.0330 0.0353
12:01-13:00, Thu., 13 Nov. 0.0374 0.0332 0.0352
11:01-12:00, Thu., 13 Nov. 0.0388 0.0329 0.0358
10:01-11:00, Thu., 13 Nov. 0.0390 0.0338 0.0359
09:01-10:00, Thu., 13 Nov. 0.0387 0.0332 0.0360
08:01-09:00, Thu., 13 Nov. 0.0408 0.0342 0.0364
07:01-08:00, Thu., 13 Nov. 0.0409 0.0344 0.0369
06:01-07:00, Thu., 13 Nov. 0.0384 0.0339 0.0365
05:01-06:00, Thu., 13 Nov. 0.0391 0.0332 0.0365
04:01-05:00, Thu., 13 Nov. 0.0393 0.0333 0.0362
03:01-04:00, Thu., 13 Nov. 0.0382 0.0332 0.0354
02:01-03:00, Thu., 13 Nov. 0.0376 0.0313 0.0347
01:01-02:00, Thu., 13 Nov. 0.0368 0.0326 0.0344
00:01-01:00, Thu., 13 Nov. 0.0370 0.0318 0.0347
23:01-24:00, Wed., 12 Nov. 0.0379 0.0319 0.0349
22:01-23:00, Wed., 12 Nov. 0.0366 0.0329 0.0348
21:01-22:00, Wed., 12 Nov. 0.0363 0.0318 0.0344
20:01-21:00, Wed., 12 Nov. 0.0364 0.0313 0.0342
19:01-20:00, Wed., 12 Nov. 0.0361 0.0306 0.0337
18:01-19:00, Wed., 12 Nov. 0.0352 0.0314 0.0331
17:01-18:00, Wed., 12 Nov. 0.0353 0.0308 0.0332
16:01-17:00, Wed., 12 Nov. 0.0357 0.0310 0.0333
15:01-16:00, Wed., 12 Nov. 0.0353 0.0308 0.0333
14:01-15:00, Wed., 12 Nov. 0.0360 0.0309 0.0331
13:01-14:00, Wed., 12 Nov. 0.0355 0.0312 0.0335
12:01-13:00, Wed., 12 Nov. 0.0359 0.0305 0.0336
11:01-12:00, Wed., 12 Nov. 0.0361 0.0311 0.0338
10:01-11:00, Wed., 12 Nov. 0.0355 0.0311 0.0333
09:01-10:00, Wed., 12 Nov. 0.0367 0.0318 0.0342
08:01-09:00, Wed., 12 Nov. 0.0368 0.0320 0.0340
07:01-08:00, Wed., 12 Nov. 0.0373 0.0318 0.0342
06:01-07:00, Wed., 12 Nov. 0.0366 0.0318 0.0341
05:01-06:00, Wed., 12 Nov. 0.0369 0.0311 0.0339
04:01-05:00, Wed., 12 Nov. 0.0356 0.0313 0.0334
03:01-04:00, Wed., 12 Nov. 0.0356 0.0316 0.0335
02:01-03:00, Wed., 12 Nov. 0.0353 0.0313 0.0337
01:01-02:00, Wed., 12 Nov. 0.0362 0.0314 0.0339
00:01-01:00, Wed., 12 Nov. 0.0357 0.0315 0.0337
23:01-24:00, Tue., 11 Nov. 0.0365 0.0318 0.0337
22:01-23:00, Tue., 11 Nov. 0.0359 0.0318 0.0337
21:01-22:00, Tue., 11 Nov. 0.0364 0.0296 0.0337
20:01-21:00, Tue., 11 Nov. 0.0370 0.0318 0.0335
19:01-20:00, Tue., 11 Nov. 0.0365 0.0315 0.0338
18:01-19:00, Tue., 11 Nov. 0.0353 0.0301 0.0332
17:01-18:00, Tue., 11 Nov. 0.0362 0.0316 0.0333
16:01-17:00, Tue., 11 Nov. 0.0363 0.0316 0.0334
15:01-16:00, Tue., 11 Nov. 0.0359 0.0314 0.0337
14:01-15:00, Tue., 11 Nov. 0.0369 0.0313 0.0337
13:01-14:00, Tue., 11 Nov. 0.0374 0.0313 0.0338
12:01-13:00, Tue., 11 Nov. 0.0354 0.0315 0.0338
11:01-12:00, Tue., 11 Nov. 0.0363 0.0322 0.0340
10:01-11:00, Tue., 11 Nov. 0.0362 0.0311 0.0341
09:01-10:00, Tue., 11 Nov. 0.0371 0.0326 0.0344
08:01-09:00, Tue., 11 Nov. 0.0379 0.0329 0.0354
07:01-08:00, Tue., 11 Nov. 0.0377 0.0319 0.0348
06:01-07:00, Tue., 11 Nov. 0.0379 0.0322 0.0353
05:01-06:00, Tue., 11 Nov. 0.0370 0.0327 0.0347