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
20:01-21:00, Sun., 15 Jun. 0.0378 0.0304 0.0344
19:01-20:00, Sun., 15 Jun. 0.0370 0.0315 0.0336
18:01-19:00, Sun., 15 Jun. 0.0365 0.0305 0.0330
17:01-18:00, Sun., 15 Jun. 0.0364 0.0310 0.0334
16:01-17:00, Sun., 15 Jun. 0.0362 0.0306 0.0333
15:01-16:00, Sun., 15 Jun. 0.0377 0.0304 0.0336
14:01-15:00, Sun., 15 Jun. 0.0361 0.0312 0.0338
13:01-14:00, Sun., 15 Jun. 0.0351 0.0302 0.0330
12:01-13:00, Sun., 15 Jun. 0.0351 0.0306 0.0332
11:01-12:00, Sun., 15 Jun. 0.0351 0.0308 0.0330
10:01-11:00, Sun., 15 Jun. 0.0365 0.0323 0.0338
09:01-10:00, Sun., 15 Jun. 0.0355 0.0303 0.0332
08:01-09:00, Sun., 15 Jun. 0.0354 0.0306 0.0333
07:01-08:00, Sun., 15 Jun. 0.0357 0.0311 0.0334
06:01-07:00, Sun., 15 Jun. 0.0381 0.0329 0.0351
05:01-06:00, Sun., 15 Jun. 0.0412 0.0348 0.0382
04:01-05:00, Sun., 15 Jun. 0.0411 0.0331 0.0365
03:01-04:00, Sun., 15 Jun. 0.0353 0.0310 0.0331
02:01-03:00, Sun., 15 Jun. 0.0345 0.0303 0.0326
01:01-02:00, Sun., 15 Jun. 0.0354 0.0312 0.0333
00:01-01:00, Sun., 15 Jun. 0.0354 0.0314 0.0336
23:01-24:00, Sat., 14 Jun. 0.0379 0.0324 0.0348
22:01-23:00, Sat., 14 Jun. 0.0394 0.0343 0.0366
21:01-22:00, Sat., 14 Jun. 0.0435 0.0360 0.0395
20:01-21:00, Sat., 14 Jun. 0.0430 0.0383 0.0407
19:01-20:00, Sat., 14 Jun. 0.0426 0.0372 0.0396
18:01-19:00, Sat., 14 Jun. 0.0397 0.0326 0.0355
17:01-18:00, Sat., 14 Jun. 0.0356 0.0319 0.0338
16:01-17:00, Sat., 14 Jun. 0.0363 0.0317 0.0339
15:01-16:00, Sat., 14 Jun. 0.0364 0.0315 0.0335
14:01-15:00, Sat., 14 Jun. 0.0354 0.0311 0.0333
13:01-14:00, Sat., 14 Jun. 0.0356 0.0305 0.0333
12:01-13:00, Sat., 14 Jun. 0.0355 0.0304 0.0331
11:01-12:00, Sat., 14 Jun. 0.0355 0.0308 0.0330
10:01-11:00, Sat., 14 Jun. 0.0356 0.0298 0.0330
09:01-10:00, Sat., 14 Jun. 0.0361 0.0311 0.0331
08:01-09:00, Sat., 14 Jun. 0.0349 0.0299 0.0328
07:01-08:00, Sat., 14 Jun. 0.0353 0.0311 0.0329
06:01-07:00, Sat., 14 Jun. 0.0362 0.0308 0.0331
05:01-06:00, Sat., 14 Jun. 0.0348 0.0310 0.0331
04:01-05:00, Sat., 14 Jun. 0.0349 0.0310 0.0328
03:01-04:00, Sat., 14 Jun. 0.0347 0.0305 0.0325
02:01-03:00, Sat., 14 Jun. 0.0357 0.0303 0.0328
01:01-02:00, Sat., 14 Jun. 0.0361 0.0297 0.0327
00:01-01:00, Sat., 14 Jun. 0.0351 0.0300 0.0328
23:01-24:00, Fri., 13 Jun. 0.0351 0.0309 0.0328
22:01-23:00, Fri., 13 Jun. 0.0350 0.0304 0.0330
21:01-22:00, Fri., 13 Jun. 0.0349 0.0304 0.0330
20:01-21:00, Fri., 13 Jun. 0.0355 0.0304 0.0331
19:01-20:00, Fri., 13 Jun. 0.0347 0.0302 0.0324
18:01-19:00, Fri., 13 Jun. 0.0343 0.0300 0.0325
17:01-18:00, Fri., 13 Jun. 0.0354 0.0294 0.0329
16:01-17:00, Fri., 13 Jun. 0.0348 0.0309 0.0330
15:01-16:00, Fri., 13 Jun. 0.0357 0.0304 0.0332
14:01-15:00, Fri., 13 Jun. 0.0354 0.0295 0.0332
13:01-14:00, Fri., 13 Jun. 0.0355 0.0310 0.0333
12:01-13:00, Fri., 13 Jun. 0.0360 0.0306 0.0333
11:01-12:00, Fri., 13 Jun. 0.0343 0.0304 0.0328
10:01-11:00, Fri., 13 Jun. 0.0363 0.0320 0.0338
09:01-10:00, Fri., 13 Jun. 0.0362 0.0318 0.0339
08:01-09:00, Fri., 13 Jun. 0.0370 0.0310 0.0336
07:01-08:00, Fri., 13 Jun. 0.0363 0.0316 0.0338
06:01-07:00, Fri., 13 Jun. 0.0365 0.0318 0.0338
05:01-06:00, Fri., 13 Jun. 0.0363 0.0312 0.0335
04:01-05:00, Fri., 13 Jun. 0.0367 0.0319 0.0340
03:01-04:00, Fri., 13 Jun. 0.0355 0.0311 0.0333
02:01-03:00, Fri., 13 Jun. 0.0349 0.0304 0.0328
01:01-02:00, Fri., 13 Jun. 0.0354 0.0302 0.0326
00:01-01:00, Fri., 13 Jun. 0.0358 0.0312 0.0330
23:01-24:00, Thu., 12 Jun. 0.0347 0.0301 0.0329
22:01-23:00, Thu., 12 Jun. 0.0360 0.0299 0.0327
21:01-22:00, Thu., 12 Jun. 0.0361 0.0298 0.0327
20:01-21:00, Thu., 12 Jun. 0.0355 0.0296 0.0328
19:01-20:00, Thu., 12 Jun. 0.0348 0.0300 0.0328
18:01-19:00, Thu., 12 Jun. 0.0352 0.0308 0.0331
17:01-18:00, Thu., 12 Jun. 0.0356 0.0315 0.0336
16:01-17:00, Thu., 12 Jun. 0.0358 0.0311 0.0336
15:01-16:00, Thu., 12 Jun. 0.0361 0.0317 0.0340
14:01-15:00, Thu., 12 Jun. 0.0362 0.0308 0.0335
13:01-14:00, Thu., 12 Jun. 0.0354 0.0311 0.0332
12:01-13:00, Thu., 12 Jun. 0.0355 0.0302 0.0332
11:01-12:00, Thu., 12 Jun. 0.0355 0.0310 0.0335
10:01-11:00, Thu., 12 Jun. 0.0356 0.0311 0.0333
09:01-10:00, Thu., 12 Jun. 0.0347 0.0311 0.0330
08:01-09:00, Thu., 12 Jun. 0.0357 0.0309 0.0331
07:01-08:00, Thu., 12 Jun. 0.0356 0.0301 0.0333
06:01-07:00, Thu., 12 Jun. 0.0355 0.0312 0.0336
05:01-06:00, Thu., 12 Jun. 0.0356 0.0314 0.0334
04:01-05:00, Thu., 12 Jun. 0.0356 0.0318 0.0338
03:01-04:00, Thu., 12 Jun. 0.0373 0.0311 0.0340
02:01-03:00, Thu., 12 Jun. 0.0360 0.0315 0.0338
01:01-02:00, Thu., 12 Jun. 0.0363 0.0305 0.0335
00:01-01:00, Thu., 12 Jun. 0.0349 0.0311 0.0330
23:01-24:00, Wed., 11 Jun. 0.0347 0.0297 0.0328
22:01-23:00, Wed., 11 Jun. 0.0360 0.0304 0.0331
21:01-22:00, Wed., 11 Jun. 0.0351 0.0307 0.0330
20:01-21:00, Wed., 11 Jun. 0.0356 0.0307 0.0330
19:01-20:00, Wed., 11 Jun. 0.0359 0.0303 0.0332
18:01-19:00, Wed., 11 Jun. 0.0370 0.0318 0.0343
17:01-18:00, Wed., 11 Jun. 0.0429 0.0341 0.0378
16:01-17:00, Wed., 11 Jun. 0.0493 0.0387 0.0431
15:01-16:00, Wed., 11 Jun. 0.0547 0.0472 0.0510
14:01-15:00, Wed., 11 Jun. 0.0513 0.0366 0.0413
13:01-14:00, Wed., 11 Jun. 0.0399 0.0315 0.0358
12:01-13:00, Wed., 11 Jun. 0.0383 0.0325 0.0351
11:01-12:00, Wed., 11 Jun. 0.0391 0.0338 0.0365
10:01-11:00, Wed., 11 Jun. 0.0376 0.0332 0.0354
09:01-10:00, Wed., 11 Jun. 0.0374 0.0328 0.0347
08:01-09:00, Wed., 11 Jun. 0.0401 0.0338 0.0369
07:01-08:00, Wed., 11 Jun. 0.0396 0.0351 0.0378
06:01-07:00, Wed., 11 Jun. 0.0384 0.0335 0.0363
05:01-06:00, Wed., 11 Jun. 0.0387 0.0322 0.0347
04:01-05:00, Wed., 11 Jun. 0.0372 0.0317 0.0340
03:01-04:00, Wed., 11 Jun. 0.0374 0.0319 0.0346
02:01-03:00, Wed., 11 Jun. 0.0344 0.0309 0.0328
01:01-02:00, Wed., 11 Jun. 0.0347 0.0303 0.0327
00:01-01:00, Wed., 11 Jun. 0.0366 0.0309 0.0329
23:01-24:00, Tue., 10 Jun. 0.0347 0.0299 0.0326
22:01-23:00, Tue., 10 Jun. 0.0344 0.0305 0.0326
21:01-22:00, Tue., 10 Jun. 0.0346 0.0302 0.0326
20:01-21:00, Tue., 10 Jun. 0.0351 0.0305 0.0328
19:01-20:00, Tue., 10 Jun. 0.0355 0.0304 0.0326
18:01-19:00, Tue., 10 Jun. 0.0348 0.0308 0.0327
17:01-18:00, Tue., 10 Jun. 0.0362 0.0306 0.0333
16:01-17:00, Tue., 10 Jun. 0.0356 0.0307 0.0331
15:01-16:00, Tue., 10 Jun. 0.0379 0.0321 0.0351
14:01-15:00, Tue., 10 Jun. 0.0406 0.0349 0.0375
13:01-14:00, Tue., 10 Jun. 0.0412 0.0341 0.0386
12:01-13:00, Tue., 10 Jun. 0.0371 0.0325 0.0349
11:01-12:00, Tue., 10 Jun. 0.0391 0.0335 0.0363
10:01-11:00, Tue., 10 Jun. 0.0391 0.0337 0.0365
09:01-10:00, Tue., 10 Jun. 0.0444 0.0365 0.0411
08:01-09:00, Tue., 10 Jun. 0.0462 0.0388 0.0428
07:01-08:00, Tue., 10 Jun. 0.0476 0.0394 0.0439
06:01-07:00, Tue., 10 Jun. 0.0470 0.0362 0.0428
05:01-06:00, Tue., 10 Jun. 0.0384 0.0313 0.0344
04:01-05:00, Tue., 10 Jun. 0.0362 0.0319 0.0340
03:01-04:00, Tue., 10 Jun. 0.0374 0.0325 0.0353
02:01-03:00, Tue., 10 Jun. 0.0370 0.0314 0.0335
01:01-02:00, Tue., 10 Jun. 0.0347 0.0305 0.0325
00:01-01:00, Tue., 10 Jun. 0.0356 0.0310 0.0326
23:01-24:00, Mon., 09 Jun. 0.0353 0.0307 0.0332
22:01-23:00, Mon., 09 Jun. 0.0353 0.0314 0.0333
21:01-22:00, Mon., 09 Jun. 0.0378 0.0323 0.0352
20:01-21:00, Mon., 09 Jun. 0.0394 0.0332 0.0359
19:01-20:00, Mon., 09 Jun. 0.0397 0.0325 0.0363
18:01-19:00, Mon., 09 Jun. 0.0393 0.0342 0.0371
17:01-18:00, Mon., 09 Jun. 0.0404 0.0351 0.0378
16:01-17:00, Mon., 09 Jun. 0.0395 0.0315 0.0343
15:01-16:00, Mon., 09 Jun. 0.0360 0.0306 0.0327
14:01-15:00, Mon., 09 Jun. 0.0357 0.0311 0.0332
13:01-14:00, Mon., 09 Jun. 0.0347 0.0308 0.0328
12:01-13:00, Mon., 09 Jun. 0.0367 0.0307 0.0333
11:01-12:00, Mon., 09 Jun. 0.0365 0.0314 0.0337
10:01-11:00, Mon., 09 Jun. 0.0366 0.0322 0.0342
09:01-10:00, Mon., 09 Jun. 0.0361 0.0313 0.0341
08:01-09:00, Mon., 09 Jun. 0.0363 0.0324 0.0347
07:01-08:00, Mon., 09 Jun. 0.0377 0.0317 0.0350
06:01-07:00, Mon., 09 Jun. 0.0371 0.0329 0.0349
05:01-06:00, Mon., 09 Jun. 0.0372 0.0322 0.0347
04:01-05:00, Mon., 09 Jun. 0.0369 0.0315 0.0345
03:01-04:00, Mon., 09 Jun. 0.0377 0.0315 0.0342
02:01-03:00, Mon., 09 Jun. 0.0376 0.0321 0.0340
01:01-02:00, Mon., 09 Jun. 0.0367 0.0321 0.0340
00:01-01:00, Mon., 09 Jun. 0.0359 0.0309 0.0334
23:01-24:00, Sun., 08 Jun. 0.0353 0.0303 0.0331
22:01-23:00, Sun., 08 Jun. 0.0352 0.0302 0.0330
21:01-22:00, Sun., 08 Jun. 0.0352 0.0303 0.0328
20:01-21:00, Sun., 08 Jun. 0.0350 0.0308 0.0328
19:01-20:00, Sun., 08 Jun. 0.0349 0.0312 0.0331
18:01-19:00, Sun., 08 Jun. 0.0353 0.0304 0.0329
17:01-18:00, Sun., 08 Jun. 0.0358 0.0294 0.0329
16:01-17:00, Sun., 08 Jun. 0.0353 0.0315 0.0333
15:01-16:00, Sun., 08 Jun. 0.0361 0.0311 0.0332
14:01-15:00, Sun., 08 Jun. 0.0356 0.0313 0.0333
13:01-14:00, Sun., 08 Jun. 0.0353 0.0302 0.0333
12:01-13:00, Sun., 08 Jun. 0.0358 0.0314 0.0333
11:01-12:00, Sun., 08 Jun. 0.0360 0.0314 0.0335
10:01-11:00, Sun., 08 Jun. 0.0366 0.0315 0.0337
09:01-10:00, Sun., 08 Jun. 0.0365 0.0318 0.0344
08:01-09:00, Sun., 08 Jun. 0.0386 0.0334 0.0355
07:01-08:00, Sun., 08 Jun. 0.0394 0.0345 0.0367
06:01-07:00, Sun., 08 Jun. 0.0394 0.0339 0.0361
05:01-06:00, Sun., 08 Jun. 0.0395 0.0332 0.0360
04:01-05:00, Sun., 08 Jun. 0.0378 0.0326 0.0353
03:01-04:00, Sun., 08 Jun. 0.0364 0.0317 0.0339
02:01-03:00, Sun., 08 Jun. 0.0350 0.0304 0.0330
01:01-02:00, Sun., 08 Jun. 0.0352 0.0307 0.0327
00:01-01:00, Sun., 08 Jun. 0.0356 0.0307 0.0330
23:01-24:00, Sat., 07 Jun. 0.0349 0.0307 0.0327
22:01-23:00, Sat., 07 Jun. 0.0341 0.0301 0.0324
21:01-22:00, Sat., 07 Jun. 0.0358 0.0302 0.0327
20:01-21:00, Sat., 07 Jun. 0.0349 0.0298 0.0324
19:01-20:00, Sat., 07 Jun. 0.0352 0.0301 0.0328
18:01-19:00, Sat., 07 Jun. 0.0350 0.0308 0.0329
17:01-18:00, Sat., 07 Jun. 0.0350 0.0307 0.0328
16:01-17:00, Sat., 07 Jun. 0.0353 0.0310 0.0328
15:01-16:00, Sat., 07 Jun. 0.0349 0.0308 0.0329
14:01-15:00, Sat., 07 Jun. 0.0353 0.0302 0.0326
13:01-14:00, Sat., 07 Jun. 0.0346 0.0303 0.0328
12:01-13:00, Sat., 07 Jun. 0.0359 0.0301 0.0329
11:01-12:00, Sat., 07 Jun. 0.0361 0.0304 0.0333
10:01-11:00, Sat., 07 Jun. 0.0368 0.0314 0.0335
09:01-10:00, Sat., 07 Jun. 0.0363 0.0311 0.0334
08:01-09:00, Sat., 07 Jun. 0.0360 0.0318 0.0339
07:01-08:00, Sat., 07 Jun. 0.0385 0.0332 0.0352
06:01-07:00, Sat., 07 Jun. 0.0369 0.0322 0.0349
05:01-06:00, Sat., 07 Jun. 0.0358 0.0311 0.0335
04:01-05:00, Sat., 07 Jun. 0.0365 0.0311 0.0334
03:01-04:00, Sat., 07 Jun. 0.0366 0.0304 0.0334
02:01-03:00, Sat., 07 Jun. 0.0343 0.0311 0.0330
01:01-02:00, Sat., 07 Jun. 0.0348 0.0303 0.0327
00:01-01:00, Sat., 07 Jun. 0.0356 0.0305 0.0327
23:01-24:00, Fri., 06 Jun. 0.0350 0.0302 0.0326
22:01-23:00, Fri., 06 Jun. 0.0359 0.0301 0.0326
21:01-22:00, Fri., 06 Jun. 0.0349 0.0305 0.0323
20:01-21:00, Fri., 06 Jun. 0.0347 0.0304 0.0324
19:01-20:00, Fri., 06 Jun. 0.0342 0.0301 0.0325
18:01-19:00, Fri., 06 Jun. 0.0348 0.0297 0.0328
17:01-18:00, Fri., 06 Jun. 0.0356 0.0307 0.0327
16:01-17:00, Fri., 06 Jun. 0.0363 0.0314 0.0332
15:01-16:00, Fri., 06 Jun. 0.0356 0.0302 0.0328
14:01-15:00, Fri., 06 Jun. 0.0365 0.0305 0.0330
13:01-14:00, Fri., 06 Jun. 0.0349 0.0313 0.0332
12:01-13:00, Fri., 06 Jun. 0.0355 0.0308 0.0331
11:01-12:00, Fri., 06 Jun. 0.0363 0.0308 0.0334
10:01-11:00, Fri., 06 Jun. 0.0357 0.0311 0.0332
09:01-10:00, Fri., 06 Jun. 0.0376 0.0310 0.0341
08:01-09:00, Fri., 06 Jun. 0.0360 0.0317 0.0338
07:01-08:00, Fri., 06 Jun. 0.0356 0.0320 0.0339
06:01-07:00, Fri., 06 Jun. 0.0360 0.0317 0.0339
05:01-06:00, Fri., 06 Jun. 0.0372 0.0315 0.0341
04:01-05:00, Fri., 06 Jun. 0.0357 0.0309 0.0340
03:01-04:00, Fri., 06 Jun. 0.0374 0.0307 0.0340
02:01-03:00, Fri., 06 Jun. 0.0367 0.0301 0.0341
01:01-02:00, Fri., 06 Jun. 0.0361 0.0300 0.0334
00:01-01:00, Fri., 06 Jun. 0.0352 0.0312 0.0333
23:01-24:00, Thu., 05 Jun. 0.0353 0.0313 0.0331
22:01-23:00, Thu., 05 Jun. 0.0357 0.0304 0.0331
21:01-22:00, Thu., 05 Jun. 0.0351 0.0308 0.0328