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

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
16:01-17:00, Mon., 18 Aug. 0.0335 0.0291 0.0309
15:01-16:00, Mon., 18 Aug. 0.0330 0.0276 0.0303
14:01-15:00, Mon., 18 Aug. 0.0328 0.0285 0.0307
13:01-14:00, Mon., 18 Aug. 0.0325 0.0287 0.0307
12:01-13:00, Mon., 18 Aug. 0.0330 0.0289 0.0307
11:01-12:00, Mon., 18 Aug. 0.0333 0.0287 0.0309
10:01-11:00, Mon., 18 Aug. 0.0331 0.0287 0.0311
09:01-10:00, Mon., 18 Aug. 0.0331 0.0283 0.0311
08:01-09:00, Mon., 18 Aug. 0.0329 0.0300 0.0316
07:01-08:00, Mon., 18 Aug. 0.0342 0.0299 0.0316
06:01-07:00, Mon., 18 Aug. 0.0335 0.0297 0.0316
05:01-06:00, Mon., 18 Aug. 0.0336 0.0292 0.0315
04:01-05:00, Mon., 18 Aug. 0.0348 0.0287 0.0311
03:01-04:00, Mon., 18 Aug. 0.0339 0.0283 0.0308
02:01-03:00, Mon., 18 Aug. 0.0329 0.0287 0.0310
01:01-02:00, Mon., 18 Aug. 0.0336 0.0290 0.0309
00:01-01:00, Mon., 18 Aug. 0.0332 0.0294 0.0309
23:01-24:00, Sun., 17 Aug. 0.0332 0.0285 0.0309
22:01-23:00, Sun., 17 Aug. 0.0326 0.0287 0.0304
21:01-22:00, Sun., 17 Aug. 0.0332 0.0286 0.0308
20:01-21:00, Sun., 17 Aug. 0.0325 0.0285 0.0305
19:01-20:00, Sun., 17 Aug. 0.0337 0.0287 0.0307
18:01-19:00, Sun., 17 Aug. 0.0328 0.0283 0.0305
17:01-18:00, Sun., 17 Aug. 0.0335 0.0276 0.0303
16:01-17:00, Sun., 17 Aug. 0.0326 0.0275 0.0302
15:01-16:00, Sun., 17 Aug. 0.0323 0.0276 0.0302
14:01-15:00, Sun., 17 Aug. 0.0318 0.0279 0.0299
13:01-14:00, Sun., 17 Aug. 0.0324 0.0280 0.0299
12:01-13:00, Sun., 17 Aug. 0.0330 0.0281 0.0300
11:01-12:00, Sun., 17 Aug. 0.0326 0.0283 0.0300
10:01-11:00, Sun., 17 Aug. 0.0326 0.0270 0.0303
09:01-10:00, Sun., 17 Aug. 0.0333 0.0286 0.0300
08:01-09:00, Sun., 17 Aug. 0.0325 0.0283 0.0301
07:01-08:00, Sun., 17 Aug. 0.0329 0.0277 0.0303
06:01-07:00, Sun., 17 Aug. 0.0325 0.0279 0.0302
05:01-06:00, Sun., 17 Aug. 0.0339 0.0280 0.0304
04:01-05:00, Sun., 17 Aug. 0.0328 0.0280 0.0301
03:01-04:00, Sun., 17 Aug. 0.0328 0.0283 0.0305
02:01-03:00, Sun., 17 Aug. 0.0330 0.0283 0.0304
01:01-02:00, Sun., 17 Aug. 0.0318 0.0279 0.0300
00:01-01:00, Sun., 17 Aug. 0.0326 0.0280 0.0302
23:01-24:00, Sat., 16 Aug. 0.0334 0.0284 0.0304
22:01-23:00, Sat., 16 Aug. 0.0318 0.0280 0.0301
21:01-22:00, Sat., 16 Aug. 0.0325 0.0282 0.0302
20:01-21:00, Sat., 16 Aug. 0.0334 0.0281 0.0302
19:01-20:00, Sat., 16 Aug. 0.0323 0.0287 0.0301
18:01-19:00, Sat., 16 Aug. 0.0319 0.0279 0.0302
17:01-18:00, Sat., 16 Aug. 0.0329 0.0283 0.0300
16:01-17:00, Sat., 16 Aug. 0.0322 0.0275 0.0298
15:01-16:00, Sat., 16 Aug. 0.0328 0.0278 0.0301
14:01-15:00, Sat., 16 Aug. 0.0325 0.0283 0.0305
13:01-14:00, Sat., 16 Aug. 0.0351 0.0283 0.0318
12:01-13:00, Sat., 16 Aug. 0.0412 0.0318 0.0362
11:01-12:00, Sat., 16 Aug. 0.0475 0.0323 0.0426
10:01-11:00, Sat., 16 Aug. 0.0329 0.0288 0.0309
09:01-10:00, Sat., 16 Aug. 0.0339 0.0289 0.0310
08:01-09:00, Sat., 16 Aug. 0.0336 0.0287 0.0312
07:01-08:00, Sat., 16 Aug. 0.0337 0.0286 0.0315
06:01-07:00, Sat., 16 Aug. 0.0342 0.0297 0.0315
05:01-06:00, Sat., 16 Aug. 0.0332 0.0294 0.0313
04:01-05:00, Sat., 16 Aug. 0.0330 0.0290 0.0311
03:01-04:00, Sat., 16 Aug. 0.0333 0.0294 0.0311
02:01-03:00, Sat., 16 Aug. 0.0333 0.0293 0.0311
01:01-02:00, Sat., 16 Aug. 0.0332 0.0290 0.0311
00:01-01:00, Sat., 16 Aug. 0.0327 0.0292 0.0310
23:01-24:00, Fri., 15 Aug. 0.0332 0.0280 0.0305
22:01-23:00, Fri., 15 Aug. 0.0327 0.0282 0.0307
21:01-22:00, Fri., 15 Aug. 0.0333 0.0290 0.0309
20:01-21:00, Fri., 15 Aug. 0.0336 0.0283 0.0308
19:01-20:00, Fri., 15 Aug. 0.0328 0.0280 0.0304
18:01-19:00, Fri., 15 Aug. 0.0330 0.0275 0.0308
17:01-18:00, Fri., 15 Aug. 0.0325 0.0287 0.0307
16:01-17:00, Fri., 15 Aug. 0.0327 0.0277 0.0304
15:01-16:00, Fri., 15 Aug. 0.0325 0.0283 0.0305
14:01-15:00, Fri., 15 Aug. 0.0342 0.0283 0.0304
13:01-14:00, Fri., 15 Aug. 0.0325 0.0281 0.0304
12:01-13:00, Fri., 15 Aug. 0.0332 0.0280 0.0306
11:01-12:00, Fri., 15 Aug. 0.0332 0.0276 0.0305
10:01-11:00, Fri., 15 Aug. 0.0339 0.0290 0.0311
09:01-10:00, Fri., 15 Aug. 0.0336 0.0291 0.0311
08:01-09:00, Fri., 15 Aug. 0.0327 0.0293 0.0311
07:01-08:00, Fri., 15 Aug. 0.0322 0.0289 0.0307
06:01-07:00, Fri., 15 Aug. 0.0327 0.0289 0.0308
05:01-06:00, Fri., 15 Aug. 0.0325 0.0280 0.0304
04:01-05:00, Fri., 15 Aug. 0.0330 0.0289 0.0306
03:01-04:00, Fri., 15 Aug. 0.0330 0.0284 0.0307
02:01-03:00, Fri., 15 Aug. 0.0332 0.0280 0.0304
01:01-02:00, Fri., 15 Aug. 0.0322 0.0280 0.0303
00:01-01:00, Fri., 15 Aug. 0.0324 0.0287 0.0303
23:01-24:00, Thu., 14 Aug. 0.0337 0.0283 0.0309
22:01-23:00, Thu., 14 Aug. 0.0325 0.0286 0.0305
21:01-22:00, Thu., 14 Aug. 0.0324 0.0282 0.0305
20:01-21:00, Thu., 14 Aug. 0.0323 0.0277 0.0307
19:01-20:00, Thu., 14 Aug. 0.0339 0.0287 0.0308
18:01-19:00, Thu., 14 Aug. 0.0327 0.0282 0.0306
17:01-18:00, Thu., 14 Aug. 0.0322 0.0277 0.0302
16:01-17:00, Thu., 14 Aug. 0.0330 0.0272 0.0300
15:01-16:00, Thu., 14 Aug. 0.0324 0.0280 0.0301
14:01-15:00, Thu., 14 Aug. 0.0329 0.0281 0.0301
13:01-14:00, Thu., 14 Aug. 0.0323 0.0280 0.0303
12:01-13:00, Thu., 14 Aug. 0.0324 0.0280 0.0301
11:01-12:00, Thu., 14 Aug. 0.0326 0.0283 0.0306
10:01-11:00, Thu., 14 Aug. 0.0322 0.0286 0.0304
09:01-10:00, Thu., 14 Aug. 0.0336 0.0286 0.0304
08:01-09:00, Thu., 14 Aug. 0.0322 0.0284 0.0304
07:01-08:00, Thu., 14 Aug. 0.0322 0.0283 0.0301
06:01-07:00, Thu., 14 Aug. 0.0325 0.0282 0.0302
05:01-06:00, Thu., 14 Aug. 0.0320 0.0281 0.0302
04:01-05:00, Thu., 14 Aug. 0.0320 0.0281 0.0299
03:01-04:00, Thu., 14 Aug. 0.0326 0.0278 0.0299
02:01-03:00, Thu., 14 Aug. 0.0322 0.0285 0.0303
01:01-02:00, Thu., 14 Aug. 0.0319 0.0283 0.0301
00:01-01:00, Thu., 14 Aug. 0.0319 0.0276 0.0300
23:01-24:00, Wed., 13 Aug. 0.0321 0.0285 0.0303
22:01-23:00, Wed., 13 Aug. 0.0333 0.0283 0.0308
21:01-22:00, Wed., 13 Aug. 0.0329 0.0287 0.0307
20:01-21:00, Wed., 13 Aug. 0.0337 0.0287 0.0307
19:01-20:00, Wed., 13 Aug. 0.0329 0.0284 0.0308
18:01-19:00, Wed., 13 Aug. 0.0338 0.0288 0.0307
17:01-18:00, Wed., 13 Aug. 0.0322 0.0288 0.0306
16:01-17:00, Wed., 13 Aug. 0.0336 0.0280 0.0304
15:01-16:00, Wed., 13 Aug. 0.0333 0.0274 0.0301
14:01-15:00, Wed., 13 Aug. 0.0331 0.0283 0.0303
13:01-14:00, Wed., 13 Aug. 0.0327 0.0284 0.0306
12:01-13:00, Wed., 13 Aug. 0.0324 0.0280 0.0303
11:01-12:00, Wed., 13 Aug. 0.0328 0.0279 0.0303
10:01-11:00, Wed., 13 Aug. 0.0332 0.0279 0.0304
09:01-10:00, Wed., 13 Aug. 0.0325 0.0283 0.0302
08:01-09:00, Wed., 13 Aug. 0.0322 0.0283 0.0302
07:01-08:00, Wed., 13 Aug. 0.0335 0.0276 0.0300
06:01-07:00, Wed., 13 Aug. 0.0324 0.0278 0.0298
05:01-06:00, Wed., 13 Aug. 0.0318 0.0282 0.0297
04:01-05:00, Wed., 13 Aug. 0.0316 0.0272 0.0299
03:01-04:00, Wed., 13 Aug. 0.0320 0.0280 0.0302
02:01-03:00, Wed., 13 Aug. 0.0325 0.0286 0.0305
01:01-02:00, Wed., 13 Aug. 0.0328 0.0290 0.0304
00:01-01:00, Wed., 13 Aug. 0.0331 0.0284 0.0302
23:01-24:00, Tue., 12 Aug. 0.0329 0.0280 0.0302
22:01-23:00, Tue., 12 Aug. 0.0325 0.0278 0.0307
21:01-22:00, Tue., 12 Aug. 0.0346 0.0295 0.0317
20:01-21:00, Tue., 12 Aug. 0.0384 0.0321 0.0348
19:01-20:00, Tue., 12 Aug. 0.0426 0.0362 0.0394
18:01-19:00, Tue., 12 Aug. 0.0413 0.0331 0.0380
17:01-18:00, Tue., 12 Aug. 0.0342 0.0287 0.0318
16:01-17:00, Tue., 12 Aug. 0.0332 0.0281 0.0313
15:01-16:00, Tue., 12 Aug. 0.0338 0.0283 0.0304
14:01-15:00, Tue., 12 Aug. 0.0370 0.0297 0.0328
13:01-14:00, Tue., 12 Aug. 0.0374 0.0298 0.0334
12:01-13:00, Tue., 12 Aug. 0.0323 0.0266 0.0297
11:01-12:00, Tue., 12 Aug. 0.0315 0.0276 0.0295
10:01-11:00, Tue., 12 Aug. 0.0335 0.0270 0.0296
09:01-10:00, Tue., 12 Aug. 0.0328 0.0282 0.0299
08:01-09:00, Tue., 12 Aug. 0.0322 0.0273 0.0297
07:01-08:00, Tue., 12 Aug. 0.0323 0.0280 0.0300
06:01-07:00, Tue., 12 Aug. 0.0321 0.0276 0.0300
05:01-06:00, Tue., 12 Aug. 0.0326 0.0284 0.0305
04:01-05:00, Tue., 12 Aug. 0.0351 0.0299 0.0320
03:01-04:00, Tue., 12 Aug. 0.0356 0.0303 0.0331
02:01-03:00, Tue., 12 Aug. 0.0356 0.0286 0.0308
01:01-02:00, Tue., 12 Aug. 0.0317 0.0269 0.0296
00:01-01:00, Tue., 12 Aug. 0.0311 0.0276 0.0293
23:01-24:00, Mon., 11 Aug. 0.0318 0.0278 0.0294
22:01-23:00, Mon., 11 Aug. 0.0310 0.0274 0.0296
21:01-22:00, Mon., 11 Aug. 0.0318 0.0276 0.0295
20:01-21:00, Mon., 11 Aug. 0.0322 0.0281 0.0297
19:01-20:00, Mon., 11 Aug. 0.0326 0.0276 0.0306
18:01-19:00, Mon., 11 Aug. 0.0383 0.0301 0.0334
17:01-18:00, Mon., 11 Aug. 0.0437 0.0344 0.0399
16:01-17:00, Mon., 11 Aug. 0.0421 0.0304 0.0367
15:01-16:00, Mon., 11 Aug. 0.0323 0.0286 0.0303
14:01-15:00, Mon., 11 Aug. 0.0326 0.0282 0.0302
13:01-14:00, Mon., 11 Aug. 0.0326 0.0280 0.0304
12:01-13:00, Mon., 11 Aug. 0.0330 0.0281 0.0305
11:01-12:00, Mon., 11 Aug. 0.0368 0.0292 0.0331
10:01-11:00, Mon., 11 Aug. 0.0398 0.0345 0.0371
09:01-10:00, Mon., 11 Aug. 0.0375 0.0303 0.0340
08:01-09:00, Mon., 11 Aug. 0.0322 0.0269 0.0292
07:01-08:00, Mon., 11 Aug. 0.0318 0.0264 0.0292
06:01-07:00, Mon., 11 Aug. 0.0324 0.0284 0.0301
05:01-06:00, Mon., 11 Aug. 0.0325 0.0283 0.0301
04:01-05:00, Mon., 11 Aug. 0.0344 0.0290 0.0319
03:01-04:00, Mon., 11 Aug. 0.0363 0.0309 0.0332
02:01-03:00, Mon., 11 Aug. 0.0384 0.0319 0.0355
01:01-02:00, Mon., 11 Aug. 0.0401 0.0353 0.0377
00:01-01:00, Mon., 11 Aug. 0.0428 0.0372 0.0394
23:01-24:00, Sun., 10 Aug. 0.0418 0.0356 0.0383
22:01-23:00, Sun., 10 Aug. 0.0414 0.0353 0.0389
21:01-22:00, Sun., 10 Aug. 0.0419 0.0346 0.0390
20:01-21:00, Sun., 10 Aug. 0.0366 0.0307 0.0340
19:01-20:00, Sun., 10 Aug. 0.0360 0.0308 0.0332
18:01-19:00, Sun., 10 Aug. 0.0340 0.0292 0.0318
17:01-18:00, Sun., 10 Aug. 0.0343 0.0297 0.0319
16:01-17:00, Sun., 10 Aug. 0.0355 0.0297 0.0330
15:01-16:00, Sun., 10 Aug. 0.0354 0.0304 0.0326
14:01-15:00, Sun., 10 Aug. 0.0366 0.0306 0.0337
13:01-14:00, Sun., 10 Aug. 0.0382 0.0339 0.0358
12:01-13:00, Sun., 10 Aug. 0.0363 0.0316 0.0341
11:01-12:00, Sun., 10 Aug. 0.0383 0.0322 0.0348
10:01-11:00, Sun., 10 Aug. 0.0395 0.0342 0.0372
09:01-10:00, Sun., 10 Aug. 0.0456 0.0384 0.0419
08:01-09:00, Sun., 10 Aug. 0.0454 0.0348 0.0399
07:01-08:00, Sun., 10 Aug. 0.0384 0.0305 0.0339
06:01-07:00, Sun., 10 Aug. 0.0339 0.0297 0.0319
05:01-06:00, Sun., 10 Aug. 0.0339 0.0291 0.0316
04:01-05:00, Sun., 10 Aug. 0.0357 0.0306 0.0326
03:01-04:00, Sun., 10 Aug. 0.0388 0.0322 0.0351
02:01-03:00, Sun., 10 Aug. 0.0388 0.0294 0.0335
01:01-02:00, Sun., 10 Aug. 0.0328 0.0293 0.0313
00:01-01:00, Sun., 10 Aug. 0.0345 0.0290 0.0317
23:01-24:00, Sat., 09 Aug. 0.0338 0.0293 0.0315
22:01-23:00, Sat., 09 Aug. 0.0338 0.0290 0.0315
21:01-22:00, Sat., 09 Aug. 0.0339 0.0294 0.0314
20:01-21:00, Sat., 09 Aug. 0.0336 0.0290 0.0316
19:01-20:00, Sat., 09 Aug. 0.0337 0.0294 0.0315
18:01-19:00, Sat., 09 Aug. 0.0331 0.0291 0.0312
17:01-18:00, Sat., 09 Aug. 0.0328 0.0292 0.0310
16:01-17:00, Sat., 09 Aug. 0.0328 0.0292 0.0313
15:01-16:00, Sat., 09 Aug. 0.0335 0.0291 0.0314
14:01-15:00, Sat., 09 Aug. 0.0330 0.0294 0.0310
13:01-14:00, Sat., 09 Aug. 0.0331 0.0284 0.0310
12:01-13:00, Sat., 09 Aug. 0.0326 0.0280 0.0308
11:01-12:00, Sat., 09 Aug. 0.0333 0.0284 0.0309
10:01-11:00, Sat., 09 Aug. 0.0335 0.0285 0.0311
09:01-10:00, Sat., 09 Aug. 0.0334 0.0283 0.0310
08:01-09:00, Sat., 09 Aug. 0.0329 0.0284 0.0310
07:01-08:00, Sat., 09 Aug. 0.0340 0.0290 0.0313
06:01-07:00, Sat., 09 Aug. 0.0335 0.0285 0.0308
05:01-06:00, Sat., 09 Aug. 0.0329 0.0291 0.0310
04:01-05:00, Sat., 09 Aug. 0.0332 0.0287 0.0311
03:01-04:00, Sat., 09 Aug. 0.0336 0.0283 0.0310
02:01-03:00, Sat., 09 Aug. 0.0332 0.0290 0.0309
01:01-02:00, Sat., 09 Aug. 0.0328 0.0291 0.0308
00:01-01:00, Sat., 09 Aug. 0.0322 0.0289 0.0308
23:01-24:00, Fri., 08 Aug. 0.0332 0.0296 0.0310
22:01-23:00, Fri., 08 Aug. 0.0335 0.0286 0.0310
21:01-22:00, Fri., 08 Aug. 0.0336 0.0291 0.0310
20:01-21:00, Fri., 08 Aug. 0.0343 0.0288 0.0309
19:01-20:00, Fri., 08 Aug. 0.0336 0.0290 0.0308
18:01-19:00, Fri., 08 Aug. 0.0336 0.0290 0.0308
17:01-18:00, Fri., 08 Aug. 0.0336 0.0286 0.0314