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, Sun., 27 Jul. 0.0385 0.0339 0.0360
03:01-04:00, Sun., 27 Jul. 0.0388 0.0339 0.0359
02:01-03:00, Sun., 27 Jul. 0.0378 0.0342 0.0361
01:01-02:00, Sun., 27 Jul. 0.0391 0.0340 0.0362
00:01-01:00, Sun., 27 Jul. 0.0383 0.0315 0.0354
23:01-24:00, Sat., 26 Jul. 0.0360 0.0313 0.0337
22:01-23:00, Sat., 26 Jul. 0.0357 0.0317 0.0337
21:01-22:00, Sat., 26 Jul. 0.0363 0.0318 0.0338
20:01-21:00, Sat., 26 Jul. 0.0361 0.0315 0.0338
19:01-20:00, Sat., 26 Jul. 0.0360 0.0311 0.0337
18:01-19:00, Sat., 26 Jul. 0.0356 0.0315 0.0334
17:01-18:00, Sat., 26 Jul. 0.0350 0.0313 0.0334
16:01-17:00, Sat., 26 Jul. 0.0375 0.0315 0.0335
15:01-16:00, Sat., 26 Jul. 0.0359 0.0315 0.0336
14:01-15:00, Sat., 26 Jul. 0.0360 0.0311 0.0337
13:01-14:00, Sat., 26 Jul. 0.0363 0.0312 0.0337
12:01-13:00, Sat., 26 Jul. 0.0359 0.0315 0.0337
11:01-12:00, Sat., 26 Jul. 0.0364 0.0321 0.0340
10:01-11:00, Sat., 26 Jul. 0.0367 0.0317 0.0342
09:01-10:00, Sat., 26 Jul. 0.0368 0.0317 0.0344
08:01-09:00, Sat., 26 Jul. 0.0381 0.0333 0.0354
07:01-08:00, Sat., 26 Jul. 0.0384 0.0343 0.0363
06:01-07:00, Sat., 26 Jul. 0.0405 0.0346 0.0372
05:01-06:00, Sat., 26 Jul. 0.0393 0.0334 0.0364
04:01-05:00, Sat., 26 Jul. 0.0391 0.0339 0.0363
03:01-04:00, Sat., 26 Jul. 0.0391 0.0343 0.0366
02:01-03:00, Sat., 26 Jul. 0.0392 0.0348 0.0367
01:01-02:00, Sat., 26 Jul. 0.0388 0.0337 0.0364
00:01-01:00, Sat., 26 Jul. 0.0396 0.0322 0.0360
23:01-24:00, Fri., 25 Jul. 0.0383 0.0324 0.0351
22:01-23:00, Fri., 25 Jul. 0.0360 0.0321 0.0338
21:01-22:00, Fri., 25 Jul. 0.0368 0.0308 0.0336
20:01-21:00, Fri., 25 Jul. 0.0379 0.0313 0.0333
19:01-20:00, Fri., 25 Jul. 0.0363 0.0308 0.0332
18:01-19:00, Fri., 25 Jul. 0.0359 0.0308 0.0333
17:01-18:00, Fri., 25 Jul. 0.0351 0.0310 0.0335
16:01-17:00, Fri., 25 Jul. 0.0359 0.0306 0.0332
15:01-16:00, Fri., 25 Jul. 0.0362 0.0306 0.0333
14:01-15:00, Fri., 25 Jul. 0.0363 0.0319 0.0339
13:01-14:00, Fri., 25 Jul. 0.0371 0.0316 0.0339
12:01-13:00, Fri., 25 Jul. 0.0356 0.0318 0.0337
11:01-12:00, Fri., 25 Jul. 0.0353 0.0317 0.0336
10:01-11:00, Fri., 25 Jul. 0.0377 0.0314 0.0339
09:01-10:00, Fri., 25 Jul. 0.0361 0.0324 0.0342
08:01-09:00, Fri., 25 Jul. 0.0382 0.0326 0.0349
07:01-08:00, Fri., 25 Jul. 0.0398 0.0332 0.0354
06:01-07:00, Fri., 25 Jul. 0.0394 0.0333 0.0367
05:01-06:00, Fri., 25 Jul. 0.0395 0.0347 0.0371
04:01-05:00, Fri., 25 Jul. 0.0387 0.0327 0.0360
03:01-04:00, Fri., 25 Jul. 0.0377 0.0334 0.0358
02:01-03:00, Fri., 25 Jul. 0.0382 0.0331 0.0358
01:01-02:00, Fri., 25 Jul. 0.0386 0.0328 0.0355
00:01-01:00, Fri., 25 Jul. 0.0363 0.0322 0.0345
23:01-24:00, Thu., 24 Jul. 0.0364 0.0312 0.0341
22:01-23:00, Thu., 24 Jul. 0.0359 0.0311 0.0336
21:01-22:00, Thu., 24 Jul. 0.0360 0.0311 0.0335
20:01-21:00, Thu., 24 Jul. 0.0363 0.0293 0.0337
19:01-20:00, Thu., 24 Jul. 0.0362 0.0312 0.0334
18:01-19:00, Thu., 24 Jul. 0.0353 0.0309 0.0332
17:01-18:00, Thu., 24 Jul. 0.0359 0.0313 0.0333
16:01-17:00, Thu., 24 Jul. 0.0363 0.0312 0.0336
15:01-16:00, Thu., 24 Jul. 0.0358 0.0309 0.0334
14:01-15:00, Thu., 24 Jul. 0.0361 0.0317 0.0336
13:01-14:00, Thu., 24 Jul. 0.0362 0.0317 0.0339
12:01-13:00, Thu., 24 Jul. 0.0385 0.0326 0.0345
11:01-12:00, Thu., 24 Jul. 0.0374 0.0327 0.0347
10:01-11:00, Thu., 24 Jul. 0.0372 0.0319 0.0344
09:01-10:00, Thu., 24 Jul. 0.0374 0.0316 0.0348
08:01-09:00, Thu., 24 Jul. 0.0381 0.0327 0.0353
07:01-08:00, Thu., 24 Jul. 0.0383 0.0325 0.0353
06:01-07:00, Thu., 24 Jul. 0.0400 0.0342 0.0373
05:01-06:00, Thu., 24 Jul. 0.0395 0.0346 0.0368
04:01-05:00, Thu., 24 Jul. 0.0389 0.0346 0.0369
03:01-04:00, Thu., 24 Jul. 0.0400 0.0312 0.0352
02:01-03:00, Thu., 24 Jul. 0.0349 0.0317 0.0336
01:01-02:00, Thu., 24 Jul. 0.0360 0.0308 0.0335
00:01-01:00, Thu., 24 Jul. 0.0358 0.0310 0.0338
23:01-24:00, Wed., 23 Jul. 0.0366 0.0313 0.0336
22:01-23:00, Wed., 23 Jul. 0.0374 0.0313 0.0333
21:01-22:00, Wed., 23 Jul. 0.0357 0.0316 0.0334
20:01-21:00, Wed., 23 Jul. 0.0362 0.0315 0.0335
19:01-20:00, Wed., 23 Jul. 0.0352 0.0304 0.0332
18:01-19:00, Wed., 23 Jul. 0.0370 0.0317 0.0335
17:01-18:00, Wed., 23 Jul. 0.0359 0.0308 0.0338
16:01-17:00, Wed., 23 Jul. 0.0366 0.0310 0.0336
15:01-16:00, Wed., 23 Jul. 0.0358 0.0308 0.0334
14:01-15:00, Wed., 23 Jul. 0.0360 0.0308 0.0336
13:01-14:00, Wed., 23 Jul. 0.0363 0.0313 0.0341
12:01-13:00, Wed., 23 Jul. 0.0360 0.0324 0.0343
11:01-12:00, Wed., 23 Jul. 0.0374 0.0319 0.0345
10:01-11:00, Wed., 23 Jul. 0.0378 0.0329 0.0348
09:01-10:00, Wed., 23 Jul. 0.0381 0.0330 0.0350
08:01-09:00, Wed., 23 Jul. 0.0380 0.0329 0.0355
07:01-08:00, Wed., 23 Jul. 0.0390 0.0329 0.0359
06:01-07:00, Wed., 23 Jul. 0.0396 0.0330 0.0364
05:01-06:00, Wed., 23 Jul. 0.0390 0.0329 0.0359
04:01-05:00, Wed., 23 Jul. 0.0366 0.0318 0.0343
03:01-04:00, Wed., 23 Jul. 0.0366 0.0317 0.0340
02:01-03:00, Wed., 23 Jul. 0.0377 0.0310 0.0344
01:01-02:00, Wed., 23 Jul. 0.0379 0.0318 0.0357
00:01-01:00, Wed., 23 Jul. 0.0352 0.0317 0.0333
23:01-24:00, Tue., 22 Jul. 0.0365 0.0318 0.0337
22:01-23:00, Tue., 22 Jul. 0.0363 0.0311 0.0333
21:01-22:00, Tue., 22 Jul. 0.0356 0.0315 0.0336
20:01-21:00, Tue., 22 Jul. 0.0360 0.0311 0.0334
19:01-20:00, Tue., 22 Jul. 0.0354 0.0311 0.0332
18:01-19:00, Tue., 22 Jul. 0.0359 0.0317 0.0335
17:01-18:00, Tue., 22 Jul. 0.0354 0.0315 0.0333
16:01-17:00, Tue., 22 Jul. 0.0361 0.0317 0.0335
15:01-16:00, Tue., 22 Jul. 0.0360 0.0308 0.0331
14:01-15:00, Tue., 22 Jul. 0.0362 0.0315 0.0336
13:01-14:00, Tue., 22 Jul. 0.0363 0.0314 0.0336
12:01-13:00, Tue., 22 Jul. 0.0365 0.0309 0.0339
11:01-12:00, Tue., 22 Jul. 0.0363 0.0313 0.0338
10:01-11:00, Tue., 22 Jul. 0.0360 0.0315 0.0338
09:01-10:00, Tue., 22 Jul. 0.0377 0.0319 0.0341
08:01-09:00, Tue., 22 Jul. 0.0369 0.0314 0.0342
07:01-08:00, Tue., 22 Jul. 0.0376 0.0317 0.0341
06:01-07:00, Tue., 22 Jul. 0.0375 0.0320 0.0348
05:01-06:00, Tue., 22 Jul. 0.0360 0.0317 0.0338
04:01-05:00, Tue., 22 Jul. 0.0358 0.0315 0.0335
03:01-04:00, Tue., 22 Jul. 0.0365 0.0313 0.0337
02:01-03:00, Tue., 22 Jul. 0.0360 0.0316 0.0335
01:01-02:00, Tue., 22 Jul. 0.0361 0.0301 0.0333
00:01-01:00, Tue., 22 Jul. 0.0363 0.0299 0.0335
23:01-24:00, Mon., 21 Jul. 0.0358 0.0312 0.0334
22:01-23:00, Mon., 21 Jul. 0.0356 0.0315 0.0332
21:01-22:00, Mon., 21 Jul. 0.0363 0.0305 0.0333
20:01-21:00, Mon., 21 Jul. 0.0362 0.0315 0.0334
19:01-20:00, Mon., 21 Jul. 0.0354 0.0311 0.0329
18:01-19:00, Mon., 21 Jul. 0.0360 0.0314 0.0333
17:01-18:00, Mon., 21 Jul. 0.0367 0.0311 0.0333
16:01-17:00, Mon., 21 Jul. 0.0363 0.0302 0.0331
15:01-16:00, Mon., 21 Jul. 0.0355 0.0312 0.0333
14:01-15:00, Mon., 21 Jul. 0.0360 0.0309 0.0333
13:01-14:00, Mon., 21 Jul. 0.0355 0.0313 0.0334
12:01-13:00, Mon., 21 Jul. 0.0358 0.0304 0.0335
11:01-12:00, Mon., 21 Jul. 0.0360 0.0322 0.0340
10:01-11:00, Mon., 21 Jul. 0.0364 0.0309 0.0341
09:01-10:00, Mon., 21 Jul. 0.0365 0.0322 0.0342
08:01-09:00, Mon., 21 Jul. 0.0361 0.0312 0.0336
07:01-08:00, Mon., 21 Jul. 0.0382 0.0322 0.0344
06:01-07:00, Mon., 21 Jul. 0.0374 0.0332 0.0353
05:01-06:00, Mon., 21 Jul. 0.0370 0.0332 0.0352
04:01-05:00, Mon., 21 Jul. 0.0385 0.0336 0.0360
03:01-04:00, Mon., 21 Jul. 0.0405 0.0339 0.0363
02:01-03:00, Mon., 21 Jul. 0.0389 0.0324 0.0353
01:01-02:00, Mon., 21 Jul. 0.0364 0.0313 0.0337
00:01-01:00, Mon., 21 Jul. 0.0358 0.0315 0.0333
23:01-24:00, Sun., 20 Jul. 0.0357 0.0307 0.0331
22:01-23:00, Sun., 20 Jul. 0.0354 0.0308 0.0331
21:01-22:00, Sun., 20 Jul. 0.0353 0.0306 0.0331
20:01-21:00, Sun., 20 Jul. 0.0346 0.0306 0.0331
19:01-20:00, Sun., 20 Jul. 0.0349 0.0307 0.0329
18:01-19:00, Sun., 20 Jul. 0.0358 0.0308 0.0333
17:01-18:00, Sun., 20 Jul. 0.0353 0.0311 0.0331
16:01-17:00, Sun., 20 Jul. 0.0353 0.0308 0.0330
15:01-16:00, Sun., 20 Jul. 0.0347 0.0304 0.0328
14:01-15:00, Sun., 20 Jul. 0.0353 0.0307 0.0330
13:01-14:00, Sun., 20 Jul. 0.0356 0.0310 0.0330
12:01-13:00, Sun., 20 Jul. 0.0362 0.0306 0.0328
11:01-12:00, Sun., 20 Jul. 0.0352 0.0305 0.0330
10:01-11:00, Sun., 20 Jul. 0.0354 0.0302 0.0325
09:01-10:00, Sun., 20 Jul. 0.0353 0.0302 0.0329
08:01-09:00, Sun., 20 Jul. 0.0369 0.0311 0.0339
07:01-08:00, Sun., 20 Jul. 0.0372 0.0318 0.0341
06:01-07:00, Sun., 20 Jul. 0.0373 0.0325 0.0348
05:01-06:00, Sun., 20 Jul. 0.0380 0.0332 0.0353
04:01-05:00, Sun., 20 Jul. 0.0374 0.0330 0.0351
03:01-04:00, Sun., 20 Jul. 0.0385 0.0320 0.0349
02:01-03:00, Sun., 20 Jul. 0.0378 0.0314 0.0343
01:01-02:00, Sun., 20 Jul. 0.0354 0.0308 0.0328
00:01-01:00, Sun., 20 Jul. 0.0353 0.0315 0.0330
23:01-24:00, Sat., 19 Jul. 0.0359 0.0304 0.0330
22:01-23:00, Sat., 19 Jul. 0.0349 0.0304 0.0328
21:01-22:00, Sat., 19 Jul. 0.0361 0.0303 0.0333
20:01-21:00, Sat., 19 Jul. 0.0348 0.0306 0.0327
19:01-20:00, Sat., 19 Jul. 0.0351 0.0309 0.0329
18:01-19:00, Sat., 19 Jul. 0.0347 0.0300 0.0327
17:01-18:00, Sat., 19 Jul. 0.0346 0.0307 0.0327
16:01-17:00, Sat., 19 Jul. 0.0351 0.0310 0.0329
15:01-16:00, Sat., 19 Jul. 0.0351 0.0307 0.0327
14:01-15:00, Sat., 19 Jul. 0.0343 0.0308 0.0326
13:01-14:00, Sat., 19 Jul. 0.0359 0.0308 0.0328
12:01-13:00, Sat., 19 Jul. 0.0350 0.0290 0.0326
11:01-12:00, Sat., 19 Jul. 0.0354 0.0300 0.0325
10:01-11:00, Sat., 19 Jul. 0.0346 0.0295 0.0325
09:01-10:00, Sat., 19 Jul. 0.0363 0.0297 0.0327
08:01-09:00, Sat., 19 Jul. 0.0361 0.0311 0.0339
07:01-08:00, Sat., 19 Jul. 0.0364 0.0317 0.0344
06:01-07:00, Sat., 19 Jul. 0.0381 0.0332 0.0348
05:01-06:00, Sat., 19 Jul. 0.0373 0.0326 0.0348
04:01-05:00, Sat., 19 Jul. 0.0371 0.0325 0.0347
03:01-04:00, Sat., 19 Jul. 0.0381 0.0326 0.0348
02:01-03:00, Sat., 19 Jul. 0.0359 0.0319 0.0336
01:01-02:00, Sat., 19 Jul. 0.0349 0.0308 0.0330
00:01-01:00, Sat., 19 Jul. 0.0353 0.0301 0.0327
23:01-24:00, Fri., 18 Jul. 0.0355 0.0298 0.0328
22:01-23:00, Fri., 18 Jul. 0.0349 0.0292 0.0327
21:01-22:00, Fri., 18 Jul. 0.0350 0.0302 0.0327
20:01-21:00, Fri., 18 Jul. 0.0350 0.0301 0.0325
19:01-20:00, Fri., 18 Jul. 0.0360 0.0303 0.0329
18:01-19:00, Fri., 18 Jul. 0.0345 0.0304 0.0328
17:01-18:00, Fri., 18 Jul. 0.0355 0.0308 0.0328
16:01-17:00, Fri., 18 Jul. 0.0348 0.0309 0.0327
15:01-16:00, Fri., 18 Jul. 0.0348 0.0306 0.0326
14:01-15:00, Fri., 18 Jul. 0.0357 0.0306 0.0328
13:01-14:00, Fri., 18 Jul. 0.0344 0.0298 0.0325
12:01-13:00, Fri., 18 Jul. 0.0347 0.0300 0.0326
11:01-12:00, Fri., 18 Jul. 0.0359 0.0303 0.0328
10:01-11:00, Fri., 18 Jul. 0.0350 0.0308 0.0324
09:01-10:00, Fri., 18 Jul. 0.0364 0.0303 0.0325
08:01-09:00, Fri., 18 Jul. 0.0353 0.0302 0.0329
07:01-08:00, Fri., 18 Jul. 0.0370 0.0313 0.0335
06:01-07:00, Fri., 18 Jul. 0.0348 0.0312 0.0329
05:01-06:00, Fri., 18 Jul. 0.0350 0.0306 0.0327
04:01-05:00, Fri., 18 Jul. 0.0353 0.0302 0.0326
03:01-04:00, Fri., 18 Jul. 0.0343 0.0303 0.0323
02:01-03:00, Fri., 18 Jul. 0.0346 0.0305 0.0324
01:01-02:00, Fri., 18 Jul. 0.0348 0.0307 0.0326
00:01-01:00, Fri., 18 Jul. 0.0345 0.0302 0.0324
23:01-24:00, Thu., 17 Jul. 0.0349 0.0301 0.0327
22:01-23:00, Thu., 17 Jul. 0.0339 0.0302 0.0323
21:01-22:00, Thu., 17 Jul. 0.0346 0.0301 0.0323
20:01-21:00, Thu., 17 Jul. 0.0347 0.0296 0.0326
19:01-20:00, Thu., 17 Jul. 0.0359 0.0303 0.0327
18:01-19:00, Thu., 17 Jul. 0.0350 0.0301 0.0326
17:01-18:00, Thu., 17 Jul. 0.0360 0.0301 0.0330
16:01-17:00, Thu., 17 Jul. 0.0363 0.0301 0.0324
15:01-16:00, Thu., 17 Jul. 0.0349 0.0304 0.0326
14:01-15:00, Thu., 17 Jul. 0.0348 0.0304 0.0325
13:01-14:00, Thu., 17 Jul. 0.0347 0.0303 0.0328
12:01-13:00, Thu., 17 Jul. 0.0350 0.0304 0.0325
11:01-12:00, Thu., 17 Jul. 0.0355 0.0305 0.0322
10:01-11:00, Thu., 17 Jul. 0.0350 0.0304 0.0324
09:01-10:00, Thu., 17 Jul. 0.0349 0.0297 0.0324
08:01-09:00, Thu., 17 Jul. 0.0343 0.0304 0.0324
07:01-08:00, Thu., 17 Jul. 0.0346 0.0302 0.0322
06:01-07:00, Thu., 17 Jul. 0.0353 0.0298 0.0323
05:01-06:00, Thu., 17 Jul. 0.0347 0.0300 0.0317