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

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
14:01-15:00, Sun., 06 Jul. 0.0356 0.0308 0.0334
13:01-14:00, Sun., 06 Jul. 0.0354 0.0304 0.0331
12:01-13:00, Sun., 06 Jul. 0.0360 0.0311 0.0332
11:01-12:00, Sun., 06 Jul. 0.0367 0.0310 0.0334
10:01-11:00, Sun., 06 Jul. 0.0359 0.0314 0.0334
09:01-10:00, Sun., 06 Jul. 0.0363 0.0318 0.0336
08:01-09:00, Sun., 06 Jul. 0.0359 0.0313 0.0336
07:01-08:00, Sun., 06 Jul. 0.0366 0.0308 0.0337
06:01-07:00, Sun., 06 Jul. 0.0365 0.0317 0.0338
05:01-06:00, Sun., 06 Jul. 0.0362 0.0320 0.0339
04:01-05:00, Sun., 06 Jul. 0.0362 0.0316 0.0336
03:01-04:00, Sun., 06 Jul. 0.0365 0.0310 0.0338
02:01-03:00, Sun., 06 Jul. 0.0356 0.0306 0.0333
01:01-02:00, Sun., 06 Jul. 0.0370 0.0320 0.0341
00:01-01:00, Sun., 06 Jul. 0.0368 0.0324 0.0345
23:01-24:00, Sat., 05 Jul. 0.0367 0.0308 0.0340
22:01-23:00, Sat., 05 Jul. 0.0370 0.0304 0.0339
21:01-22:00, Sat., 05 Jul. 0.0359 0.0308 0.0336
20:01-21:00, Sat., 05 Jul. 0.0349 0.0311 0.0331
19:01-20:00, Sat., 05 Jul. 0.0362 0.0308 0.0334
18:01-19:00, Sat., 05 Jul. 0.0364 0.0309 0.0334
17:01-18:00, Sat., 05 Jul. 0.0352 0.0304 0.0332
16:01-17:00, Sat., 05 Jul. 0.0353 0.0304 0.0332
15:01-16:00, Sat., 05 Jul. 0.0360 0.0312 0.0333
14:01-15:00, Sat., 05 Jul. 0.0356 0.0315 0.0335
13:01-14:00, Sat., 05 Jul. 0.0360 0.0317 0.0341
12:01-13:00, Sat., 05 Jul. 0.0373 0.0326 0.0348
11:01-12:00, Sat., 05 Jul. 0.0369 0.0318 0.0340
10:01-11:00, Sat., 05 Jul. 0.0357 0.0308 0.0334
09:01-10:00, Sat., 05 Jul. 0.0364 0.0315 0.0338
08:01-09:00, Sat., 05 Jul. 0.0371 0.0312 0.0340
07:01-08:00, Sat., 05 Jul. 0.0370 0.0320 0.0340
06:01-07:00, Sat., 05 Jul. 0.0350 0.0312 0.0335
05:01-06:00, Sat., 05 Jul. 0.0356 0.0305 0.0333
04:01-05:00, Sat., 05 Jul. 0.0358 0.0313 0.0332
03:01-04:00, Sat., 05 Jul. 0.0353 0.0303 0.0333
02:01-03:00, Sat., 05 Jul. 0.0357 0.0304 0.0329
01:01-02:00, Sat., 05 Jul. 0.0350 0.0304 0.0329
00:01-01:00, Sat., 05 Jul. 0.0349 0.0296 0.0328
23:01-24:00, Fri., 04 Jul. 0.0359 0.0311 0.0334
22:01-23:00, Fri., 04 Jul. 0.0357 0.0323 0.0343
21:01-22:00, Fri., 04 Jul. 0.0361 0.0308 0.0331
20:01-21:00, Fri., 04 Jul. 0.0352 0.0297 0.0325
19:01-20:00, Fri., 04 Jul. 0.0346 0.0301 0.0325
18:01-19:00, Fri., 04 Jul. 0.0358 0.0304 0.0325
17:01-18:00, Fri., 04 Jul. 0.0347 0.0304 0.0327
16:01-17:00, Fri., 04 Jul. 0.0354 0.0308 0.0330
15:01-16:00, Fri., 04 Jul. 0.0344 0.0306 0.0326
14:01-15:00, Fri., 04 Jul. 0.0351 0.0301 0.0327
13:01-14:00, Fri., 04 Jul. 0.0349 0.0310 0.0328
12:01-13:00, Fri., 04 Jul. 0.0349 0.0308 0.0329
11:01-12:00, Fri., 04 Jul. 0.0351 0.0309 0.0328
10:01-11:00, Fri., 04 Jul. 0.0355 0.0298 0.0326
09:01-10:00, Fri., 04 Jul. 0.0346 0.0302 0.0325
08:01-09:00, Fri., 04 Jul. 0.0347 0.0297 0.0325
07:01-08:00, Fri., 04 Jul. 0.0358 0.0301 0.0327
06:01-07:00, Fri., 04 Jul. 0.0343 0.0306 0.0325
05:01-06:00, Fri., 04 Jul. 0.0349 0.0302 0.0327
04:01-05:00, Fri., 04 Jul. 0.0346 0.0292 0.0326
03:01-04:00, Fri., 04 Jul. 0.0353 0.0307 0.0328
02:01-03:00, Fri., 04 Jul. 0.0350 0.0302 0.0325
01:01-02:00, Fri., 04 Jul. 0.0353 0.0305 0.0326
00:01-01:00, Fri., 04 Jul. 0.0354 0.0291 0.0325
23:01-24:00, Thu., 03 Jul. 0.0348 0.0307 0.0327
22:01-23:00, Thu., 03 Jul. 0.0351 0.0301 0.0326
21:01-22:00, Thu., 03 Jul. 0.0352 0.0308 0.0327
20:01-21:00, Thu., 03 Jul. 0.0346 0.0301 0.0325
19:01-20:00, Thu., 03 Jul. 0.0340 0.0308 0.0323
18:01-19:00, Thu., 03 Jul. 0.0344 0.0307 0.0324
17:01-18:00, Thu., 03 Jul. 0.0344 0.0311 0.0326
16:01-17:00, Thu., 03 Jul. 0.0347 0.0308 0.0327
15:01-16:00, Thu., 03 Jul. 0.0353 0.0308 0.0327
14:01-15:00, Thu., 03 Jul. 0.0349 0.0308 0.0329
13:01-14:00, Thu., 03 Jul. 0.0349 0.0308 0.0327
12:01-13:00, Thu., 03 Jul. 0.0349 0.0305 0.0327
11:01-12:00, Thu., 03 Jul. 0.0344 0.0306 0.0324
10:01-11:00, Thu., 03 Jul. 0.0348 0.0301 0.0325
09:01-10:00, Thu., 03 Jul. 0.0348 0.0298 0.0322
08:01-09:00, Thu., 03 Jul. 0.0351 0.0302 0.0325
07:01-08:00, Thu., 03 Jul. 0.0352 0.0301 0.0327
06:01-07:00, Thu., 03 Jul. 0.0343 0.0292 0.0325
05:01-06:00, Thu., 03 Jul. 0.0346 0.0307 0.0328
04:01-05:00, Thu., 03 Jul. 0.0352 0.0304 0.0327
03:01-04:00, Thu., 03 Jul. 0.0349 0.0301 0.0325
02:01-03:00, Thu., 03 Jul. 0.0349 0.0295 0.0327
01:01-02:00, Thu., 03 Jul. 0.0344 0.0307 0.0325
00:01-01:00, Thu., 03 Jul. 0.0349 0.0312 0.0327
23:01-24:00, Wed., 02 Jul. 0.0344 0.0307 0.0326
22:01-23:00, Wed., 02 Jul. 0.0345 0.0304 0.0325
21:01-22:00, Wed., 02 Jul. 0.0354 0.0307 0.0326
20:01-21:00, Wed., 02 Jul. 0.0356 0.0305 0.0325
19:01-20:00, Wed., 02 Jul. 0.0342 0.0302 0.0324
18:01-19:00, Wed., 02 Jul. 0.0341 0.0302 0.0323
17:01-18:00, Wed., 02 Jul. 0.0343 0.0289 0.0322
16:01-17:00, Wed., 02 Jul. 0.0353 0.0299 0.0324
15:01-16:00, Wed., 02 Jul. 0.0349 0.0303 0.0327
14:01-15:00, Wed., 02 Jul. 0.0360 0.0298 0.0327
13:01-14:00, Wed., 02 Jul. 0.0346 0.0300 0.0326
12:01-13:00, Wed., 02 Jul. 0.0349 0.0310 0.0327
11:01-12:00, Wed., 02 Jul. 0.0360 0.0305 0.0325
10:01-11:00, Wed., 02 Jul. 0.0366 0.0307 0.0327
09:01-10:00, Wed., 02 Jul. 0.0350 0.0306 0.0326
08:01-09:00, Wed., 02 Jul. 0.0349 0.0304 0.0326
07:01-08:00, Wed., 02 Jul. 0.0343 0.0304 0.0324
06:01-07:00, Wed., 02 Jul. 0.0348 0.0298 0.0325
05:01-06:00, Wed., 02 Jul. 0.0353 0.0308 0.0329
04:01-05:00, Wed., 02 Jul. 0.0353 0.0304 0.0331
03:01-04:00, Wed., 02 Jul. 0.0356 0.0302 0.0330
02:01-03:00, Wed., 02 Jul. 0.0347 0.0307 0.0327
01:01-02:00, Wed., 02 Jul. 0.0349 0.0305 0.0328
00:01-01:00, Wed., 02 Jul. 0.0356 0.0306 0.0327
23:01-24:00, Tue., 01 Jul. 0.0349 0.0311 0.0329
22:01-23:00, Tue., 01 Jul. 0.0356 0.0307 0.0334
21:01-22:00, Tue., 01 Jul. 0.0396 0.0326 0.0362
20:01-21:00, Tue., 01 Jul. 0.0459 0.0378 0.0415
19:01-20:00, Tue., 01 Jul. 0.0394 0.0300 0.0348
18:01-19:00, Tue., 01 Jul. 0.0345 0.0301 0.0326
17:01-18:00, Tue., 01 Jul. 0.0357 0.0302 0.0325
16:01-17:00, Tue., 01 Jul. 0.0349 0.0305 0.0325
15:01-16:00, Tue., 01 Jul. 0.0355 0.0304 0.0328
14:01-15:00, Tue., 01 Jul. 0.0348 0.0304 0.0326
13:01-14:00, Tue., 01 Jul. 0.0345 0.0301 0.0326
12:01-13:00, Tue., 01 Jul. 0.0359 0.0311 0.0328
11:01-12:00, Tue., 01 Jul. 0.0352 0.0303 0.0328
10:01-11:00, Tue., 01 Jul. 0.0353 0.0302 0.0328
09:01-10:00, Tue., 01 Jul. 0.0353 0.0304 0.0326
08:01-09:00, Tue., 01 Jul. 0.0343 0.0313 0.0328
07:01-08:00, Tue., 01 Jul. 0.0351 0.0303 0.0326
06:01-07:00, Tue., 01 Jul. 0.0354 0.0307 0.0329
05:01-06:00, Tue., 01 Jul. 0.0352 0.0302 0.0327
04:01-05:00, Tue., 01 Jul. 0.0343 0.0304 0.0327
03:01-04:00, Tue., 01 Jul. 0.0353 0.0301 0.0326
02:01-03:00, Tue., 01 Jul. 0.0346 0.0310 0.0328
01:01-02:00, Tue., 01 Jul. 0.0345 0.0301 0.0327
00:01-01:00, Tue., 01 Jul. 0.0358 0.0305 0.0327
23:01-24:00, Mon., 30 Jun. 0.0360 0.0312 0.0329
22:01-23:00, Mon., 30 Jun. 0.0350 0.0305 0.0328
21:01-22:00, Mon., 30 Jun. 0.0349 0.0303 0.0328
20:01-21:00, Mon., 30 Jun. 0.0347 0.0304 0.0328
19:01-20:00, Mon., 30 Jun. 0.0352 0.0303 0.0327
18:01-19:00, Mon., 30 Jun. 0.0350 0.0308 0.0327
17:01-18:00, Mon., 30 Jun. 0.0349 0.0295 0.0325
16:01-17:00, Mon., 30 Jun. 0.0352 0.0303 0.0325
15:01-16:00, Mon., 30 Jun. 0.0345 0.0303 0.0326
14:01-15:00, Mon., 30 Jun. 0.0357 0.0309 0.0329
13:01-14:00, Mon., 30 Jun. 0.0345 0.0303 0.0327
12:01-13:00, Mon., 30 Jun. 0.0357 0.0302 0.0328
11:01-12:00, Mon., 30 Jun. 0.0363 0.0304 0.0326
10:01-11:00, Mon., 30 Jun. 0.0346 0.0307 0.0325
09:01-10:00, Mon., 30 Jun. 0.0349 0.0282 0.0321
08:01-09:00, Mon., 30 Jun. 0.0351 0.0308 0.0327
07:01-08:00, Mon., 30 Jun. 0.0354 0.0308 0.0328
06:01-07:00, Mon., 30 Jun. 0.0353 0.0304 0.0330
05:01-06:00, Mon., 30 Jun. 0.0353 0.0305 0.0328
04:01-05:00, Mon., 30 Jun. 0.0352 0.0309 0.0328
03:01-04:00, Mon., 30 Jun. 0.0364 0.0294 0.0326
02:01-03:00, Mon., 30 Jun. 0.0349 0.0301 0.0328
01:01-02:00, Mon., 30 Jun. 0.0360 0.0311 0.0328
00:01-01:00, Mon., 30 Jun. 0.0352 0.0302 0.0327
23:01-24:00, Sun., 29 Jun. 0.0350 0.0311 0.0330
22:01-23:00, Sun., 29 Jun. 0.0355 0.0311 0.0328
21:01-22:00, Sun., 29 Jun. 0.0349 0.0304 0.0326
20:01-21:00, Sun., 29 Jun. 0.0346 0.0307 0.0326
19:01-20:00, Sun., 29 Jun. 0.0350 0.0304 0.0327
18:01-19:00, Sun., 29 Jun. 0.0353 0.0304 0.0324
17:01-18:00, Sun., 29 Jun. 0.0345 0.0300 0.0325
16:01-17:00, Sun., 29 Jun. 0.0346 0.0307 0.0325
15:01-16:00, Sun., 29 Jun. 0.0352 0.0305 0.0327
14:01-15:00, Sun., 29 Jun. 0.0355 0.0308 0.0329
13:01-14:00, Sun., 29 Jun. 0.0346 0.0304 0.0327
12:01-13:00, Sun., 29 Jun. 0.0353 0.0296 0.0327
11:01-12:00, Sun., 29 Jun. 0.0351 0.0301 0.0325
10:01-11:00, Sun., 29 Jun. 0.0363 0.0297 0.0328
09:01-10:00, Sun., 29 Jun. 0.0363 0.0302 0.0327
08:01-09:00, Sun., 29 Jun. 0.0354 0.0308 0.0329
07:01-08:00, Sun., 29 Jun. 0.0353 0.0302 0.0329
06:01-07:00, Sun., 29 Jun. 0.0349 0.0301 0.0327
05:01-06:00, Sun., 29 Jun. 0.0352 0.0303 0.0327
04:01-05:00, Sun., 29 Jun. 0.0352 0.0303 0.0327
03:01-04:00, Sun., 29 Jun. 0.0353 0.0304 0.0327
02:01-03:00, Sun., 29 Jun. 0.0353 0.0297 0.0327
01:01-02:00, Sun., 29 Jun. 0.0350 0.0303 0.0328
00:01-01:00, Sun., 29 Jun. 0.0351 0.0303 0.0329
23:01-24:00, Sat., 28 Jun. 0.0352 0.0306 0.0327
22:01-23:00, Sat., 28 Jun. 0.0351 0.0312 0.0328
21:01-22:00, Sat., 28 Jun. 0.0353 0.0297 0.0328
20:01-21:00, Sat., 28 Jun. 0.0353 0.0310 0.0329
19:01-20:00, Sat., 28 Jun. 0.0346 0.0304 0.0325
18:01-19:00, Sat., 28 Jun. 0.0365 0.0311 0.0331
17:01-18:00, Sat., 28 Jun. 0.0353 0.0309 0.0331
16:01-17:00, Sat., 28 Jun. 0.0351 0.0308 0.0329
15:01-16:00, Sat., 28 Jun. 0.0347 0.0310 0.0327
14:01-15:00, Sat., 28 Jun. 0.0356 0.0301 0.0327
13:01-14:00, Sat., 28 Jun. 0.0349 0.0309 0.0326
12:01-13:00, Sat., 28 Jun. 0.0347 0.0298 0.0328
11:01-12:00, Sat., 28 Jun. 0.0353 0.0304 0.0328
10:01-11:00, Sat., 28 Jun. 0.0345 0.0304 0.0327
09:01-10:00, Sat., 28 Jun. 0.0354 0.0308 0.0332
08:01-09:00, Sat., 28 Jun. 0.0364 0.0296 0.0326
07:01-08:00, Sat., 28 Jun. 0.0348 0.0308 0.0329
06:01-07:00, Sat., 28 Jun. 0.0344 0.0292 0.0327
05:01-06:00, Sat., 28 Jun. 0.0348 0.0302 0.0325
04:01-05:00, Sat., 28 Jun. 0.0349 0.0297 0.0322
03:01-04:00, Sat., 28 Jun. 0.0356 0.0304 0.0326
02:01-03:00, Sat., 28 Jun. 0.0356 0.0303 0.0327
01:01-02:00, Sat., 28 Jun. 0.0349 0.0302 0.0326
00:01-01:00, Sat., 28 Jun. 0.0346 0.0301 0.0323
23:01-24:00, Fri., 27 Jun. 0.0348 0.0308 0.0327
22:01-23:00, Fri., 27 Jun. 0.0347 0.0304 0.0326
21:01-22:00, Fri., 27 Jun. 0.0356 0.0308 0.0327
20:01-21:00, Fri., 27 Jun. 0.0352 0.0299 0.0326
19:01-20:00, Fri., 27 Jun. 0.0350 0.0294 0.0327
18:01-19:00, Fri., 27 Jun. 0.0349 0.0301 0.0326
17:01-18:00, Fri., 27 Jun. 0.0352 0.0299 0.0326
16:01-17:00, Fri., 27 Jun. 0.0355 0.0307 0.0328
15:01-16:00, Fri., 27 Jun. 0.0346 0.0305 0.0324
14:01-15:00, Fri., 27 Jun. 0.0352 0.0296 0.0325
13:01-14:00, Fri., 27 Jun. 0.0345 0.0302 0.0322
12:01-13:00, Fri., 27 Jun. 0.0347 0.0308 0.0324
11:01-12:00, Fri., 27 Jun. 0.0346 0.0299 0.0324
10:01-11:00, Fri., 27 Jun. 0.0349 0.0301 0.0326
09:01-10:00, Fri., 27 Jun. 0.0352 0.0297 0.0320
08:01-09:00, Fri., 27 Jun. 0.0343 0.0290 0.0321
07:01-08:00, Fri., 27 Jun. 0.0348 0.0308 0.0325
06:01-07:00, Fri., 27 Jun. 0.0353 0.0294 0.0324
05:01-06:00, Fri., 27 Jun. 0.0342 0.0300 0.0322
04:01-05:00, Fri., 27 Jun. 0.0343 0.0297 0.0322
03:01-04:00, Fri., 27 Jun. 0.0341 0.0295 0.0318
02:01-03:00, Fri., 27 Jun. 0.0343 0.0300 0.0321
01:01-02:00, Fri., 27 Jun. 0.0337 0.0278 0.0318
00:01-01:00, Fri., 27 Jun. 0.0355 0.0305 0.0332
23:01-24:00, Thu., 26 Jun. 0.0401 0.0334 0.0363
22:01-23:00, Thu., 26 Jun. 0.0404 0.0332 0.0368
21:01-22:00, Thu., 26 Jun. 0.0387 0.0322 0.0353
20:01-21:00, Thu., 26 Jun. 0.0391 0.0329 0.0361
19:01-20:00, Thu., 26 Jun. 0.0359 0.0294 0.0321
18:01-19:00, Thu., 26 Jun. 0.0344 0.0291 0.0317
17:01-18:00, Thu., 26 Jun. 0.0336 0.0295 0.0318
16:01-17:00, Thu., 26 Jun. 0.0339 0.0297 0.0321
15:01-16:00, Thu., 26 Jun. 0.0334 0.0296 0.0316