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

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
08:01-09:00, Tue., 12 May. 0.0381 0.0322 0.0345
07:01-08:00, Tue., 12 May. 0.0377 0.0322 0.0347
06:01-07:00, Tue., 12 May. 0.0367 0.0324 0.0343
05:01-06:00, Tue., 12 May. 0.0365 0.0318 0.0341
04:01-05:00, Tue., 12 May. 0.0360 0.0318 0.0340
03:01-04:00, Tue., 12 May. 0.0363 0.0311 0.0340
02:01-03:00, Tue., 12 May. 0.0360 0.0322 0.0341
01:01-02:00, Tue., 12 May. 0.0363 0.0318 0.0340
00:01-01:00, Tue., 12 May. 0.0372 0.0316 0.0341
23:01-24:00, Mon., 11 May. 0.0370 0.0317 0.0341
22:01-23:00, Mon., 11 May. 0.0356 0.0312 0.0340
21:01-22:00, Mon., 11 May. 0.0371 0.0319 0.0342
20:01-21:00, Mon., 11 May. 0.0370 0.0318 0.0340
19:01-20:00, Mon., 11 May. 0.0367 0.0318 0.0340
18:01-19:00, Mon., 11 May. 0.0374 0.0317 0.0340
17:01-18:00, Mon., 11 May. 0.0364 0.0321 0.0343
16:01-17:00, Mon., 11 May. 0.0374 0.0313 0.0340
15:01-16:00, Mon., 11 May. 0.0364 0.0326 0.0342
14:01-15:00, Mon., 11 May. 0.0367 0.0319 0.0340
13:01-14:00, Mon., 11 May. 0.0363 0.0319 0.0339
12:01-13:00, Mon., 11 May. 0.0371 0.0318 0.0341
11:01-12:00, Mon., 11 May. 0.0359 0.0321 0.0339
10:01-11:00, Mon., 11 May. 0.0365 0.0311 0.0340
09:01-10:00, Mon., 11 May. 0.0365 0.0315 0.0342
08:01-09:00, Mon., 11 May. 0.0364 0.0316 0.0341
07:01-08:00, Mon., 11 May. 0.0370 0.0328 0.0347
06:01-07:00, Mon., 11 May. 0.0367 0.0320 0.0343
05:01-06:00, Mon., 11 May. 0.0360 0.0318 0.0339
04:01-05:00, Mon., 11 May. 0.0362 0.0317 0.0339
03:01-04:00, Mon., 11 May. 0.0366 0.0305 0.0338
02:01-03:00, Mon., 11 May. 0.0365 0.0308 0.0340
01:01-02:00, Mon., 11 May. 0.0372 0.0308 0.0337
00:01-01:00, Mon., 11 May. 0.0356 0.0316 0.0339
23:01-24:00, Sun., 10 May. 0.0356 0.0311 0.0338
22:01-23:00, Sun., 10 May. 0.0367 0.0314 0.0338
21:01-22:00, Sun., 10 May. 0.0368 0.0318 0.0337
20:01-21:00, Sun., 10 May. 0.0362 0.0321 0.0340
19:01-20:00, Sun., 10 May. 0.0362 0.0318 0.0339
18:01-19:00, Sun., 10 May. 0.0361 0.0313 0.0339
17:01-18:00, Sun., 10 May. 0.0360 0.0318 0.0339
16:01-17:00, Sun., 10 May. 0.0381 0.0297 0.0340
15:01-16:00, Sun., 10 May. 0.0367 0.0320 0.0342
14:01-15:00, Sun., 10 May. 0.0370 0.0318 0.0339
13:01-14:00, Sun., 10 May. 0.0367 0.0320 0.0339
12:01-13:00, Sun., 10 May. 0.0376 0.0322 0.0344
11:01-12:00, Sun., 10 May. 0.0361 0.0323 0.0342
10:01-11:00, Sun., 10 May. 0.0358 0.0314 0.0343
09:01-10:00, Sun., 10 May. 0.0367 0.0326 0.0346
08:01-09:00, Sun., 10 May. 0.0364 0.0322 0.0343
07:01-08:00, Sun., 10 May. 0.0370 0.0326 0.0346
06:01-07:00, Sun., 10 May. 0.0367 0.0314 0.0343
05:01-06:00, Sun., 10 May. 0.0364 0.0322 0.0340
04:01-05:00, Sun., 10 May. 0.0365 0.0323 0.0344
03:01-04:00, Sun., 10 May. 0.0366 0.0320 0.0339
02:01-03:00, Sun., 10 May. 0.0369 0.0325 0.0342
01:01-02:00, Sun., 10 May. 0.0360 0.0318 0.0341
00:01-01:00, Sun., 10 May. 0.0363 0.0312 0.0337
23:01-24:00, Sat., 09 May. 0.0370 0.0311 0.0340
22:01-23:00, Sat., 09 May. 0.0361 0.0320 0.0338
21:01-22:00, Sat., 09 May. 0.0363 0.0314 0.0336
20:01-21:00, Sat., 09 May. 0.0361 0.0315 0.0338
19:01-20:00, Sat., 09 May. 0.0360 0.0318 0.0338
18:01-19:00, Sat., 09 May. 0.0357 0.0312 0.0341
17:01-18:00, Sat., 09 May. 0.0376 0.0320 0.0343
16:01-17:00, Sat., 09 May. 0.0366 0.0322 0.0343
15:01-16:00, Sat., 09 May. 0.0366 0.0319 0.0343
14:01-15:00, Sat., 09 May. 0.0367 0.0315 0.0342
13:01-14:00, Sat., 09 May. 0.0368 0.0321 0.0343
12:01-13:00, Sat., 09 May. 0.0371 0.0312 0.0340
11:01-12:00, Sat., 09 May. 0.0363 0.0309 0.0339
10:01-11:00, Sat., 09 May. 0.0363 0.0322 0.0344
09:01-10:00, Sat., 09 May. 0.0370 0.0318 0.0344
08:01-09:00, Sat., 09 May. 0.0370 0.0322 0.0346
07:01-08:00, Sat., 09 May. 0.0366 0.0318 0.0342
06:01-07:00, Sat., 09 May. 0.0363 0.0314 0.0337
05:01-06:00, Sat., 09 May. 0.0363 0.0308 0.0338
04:01-05:00, Sat., 09 May. 0.0361 0.0319 0.0338
03:01-04:00, Sat., 09 May. 0.0363 0.0308 0.0342
02:01-03:00, Sat., 09 May. 0.0374 0.0318 0.0344
01:01-02:00, Sat., 09 May. 0.0371 0.0316 0.0346
00:01-01:00, Sat., 09 May. 0.0358 0.0318 0.0341
23:01-24:00, Fri., 08 May. 0.0373 0.0319 0.0342
22:01-23:00, Fri., 08 May. 0.0364 0.0320 0.0341
21:01-22:00, Fri., 08 May. 0.0360 0.0314 0.0339
20:01-21:00, Fri., 08 May. 0.0362 0.0314 0.0339
19:01-20:00, Fri., 08 May. 0.0371 0.0318 0.0339
18:01-19:00, Fri., 08 May. 0.0368 0.0322 0.0345
17:01-18:00, Fri., 08 May. 0.0381 0.0322 0.0341
16:01-17:00, Fri., 08 May. 0.0370 0.0315 0.0341
15:01-16:00, Fri., 08 May. 0.0372 0.0322 0.0340
14:01-15:00, Fri., 08 May. 0.0355 0.0315 0.0337
13:01-14:00, Fri., 08 May. 0.0368 0.0316 0.0342
12:01-13:00, Fri., 08 May. 0.0366 0.0317 0.0341
11:01-12:00, Fri., 08 May. 0.0367 0.0328 0.0347
10:01-11:00, Fri., 08 May. 0.0377 0.0336 0.0354
09:01-10:00, Fri., 08 May. 0.0375 0.0335 0.0356
08:01-09:00, Fri., 08 May. 0.0381 0.0330 0.0359
07:01-08:00, Fri., 08 May. 0.0385 0.0336 0.0362
06:01-07:00, Fri., 08 May. 0.0395 0.0337 0.0360
05:01-06:00, Fri., 08 May. 0.0384 0.0330 0.0352
04:01-05:00, Fri., 08 May. 0.0367 0.0325 0.0347
03:01-04:00, Fri., 08 May. 0.0368 0.0314 0.0348
02:01-03:00, Fri., 08 May. 0.0376 0.0322 0.0346
01:01-02:00, Fri., 08 May. 0.0373 0.0321 0.0343
00:01-01:00, Fri., 08 May. 0.0363 0.0323 0.0342
23:01-24:00, Thu., 07 May. 0.0366 0.0317 0.0339
22:01-23:00, Thu., 07 May. 0.0358 0.0318 0.0339
21:01-22:00, Thu., 07 May. 0.0369 0.0314 0.0337
20:01-21:00, Thu., 07 May. 0.0356 0.0318 0.0336
19:01-20:00, Thu., 07 May. 0.0360 0.0305 0.0334
18:01-19:00, Thu., 07 May. 0.0361 0.0318 0.0336
17:01-18:00, Thu., 07 May. 0.0350 0.0305 0.0333
16:01-17:00, Thu., 07 May. 0.0362 0.0297 0.0334
15:01-16:00, Thu., 07 May. 0.0358 0.0308 0.0335
14:01-15:00, Thu., 07 May. 0.0364 0.0316 0.0338
13:01-14:00, Thu., 07 May. 0.0360 0.0323 0.0339
12:01-13:00, Thu., 07 May. 0.0357 0.0318 0.0336
11:01-12:00, Thu., 07 May. 0.0370 0.0316 0.0342
10:01-11:00, Thu., 07 May. 0.0363 0.0315 0.0342
09:01-10:00, Thu., 07 May. 0.0370 0.0320 0.0344
08:01-09:00, Thu., 07 May. 0.0370 0.0322 0.0345
07:01-08:00, Thu., 07 May. 0.0367 0.0321 0.0342
06:01-07:00, Thu., 07 May. 0.0377 0.0327 0.0348
05:01-06:00, Thu., 07 May. 0.0364 0.0321 0.0345
04:01-05:00, Thu., 07 May. 0.0374 0.0326 0.0348
03:01-04:00, Thu., 07 May. 0.0373 0.0306 0.0347
02:01-03:00, Thu., 07 May. 0.0370 0.0313 0.0343
01:01-02:00, Thu., 07 May. 0.0360 0.0317 0.0335
00:01-01:00, Thu., 07 May. 0.0354 0.0311 0.0333
23:01-24:00, Wed., 06 May. 0.0354 0.0308 0.0330
22:01-23:00, Wed., 06 May. 0.0380 0.0312 0.0334
21:01-22:00, Wed., 06 May. 0.0351 0.0314 0.0332
20:01-21:00, Wed., 06 May. 0.0357 0.0311 0.0333
19:01-20:00, Wed., 06 May. 0.0358 0.0315 0.0337
18:01-19:00, Wed., 06 May. 0.0361 0.0308 0.0334
17:01-18:00, Wed., 06 May. 0.0363 0.0312 0.0337
16:01-17:00, Wed., 06 May. 0.0366 0.0312 0.0335
15:01-16:00, Wed., 06 May. 0.0349 0.0309 0.0334
14:01-15:00, Wed., 06 May. 0.0362 0.0309 0.0335
13:01-14:00, Wed., 06 May. 0.0362 0.0311 0.0335
12:01-13:00, Wed., 06 May. 0.0352 0.0308 0.0333
11:01-12:00, Wed., 06 May. 0.0358 0.0318 0.0337
10:01-11:00, Wed., 06 May. 0.0358 0.0313 0.0337
09:01-10:00, Wed., 06 May. 0.0362 0.0318 0.0339
08:01-09:00, Wed., 06 May. 0.0358 0.0312 0.0339
07:01-08:00, Wed., 06 May. 0.0366 0.0313 0.0341
06:01-07:00, Wed., 06 May. 0.0358 0.0305 0.0337
05:01-06:00, Wed., 06 May. 0.0360 0.0308 0.0334
04:01-05:00, Wed., 06 May. 0.0362 0.0318 0.0337
03:01-04:00, Wed., 06 May. 0.0351 0.0304 0.0330
02:01-03:00, Wed., 06 May. 0.0349 0.0308 0.0327
01:01-02:00, Wed., 06 May. 0.0363 0.0304 0.0332
00:01-01:00, Wed., 06 May. 0.0348 0.0306 0.0330
23:01-24:00, Tue., 05 May. 0.0358 0.0305 0.0332
22:01-23:00, Tue., 05 May. 0.0356 0.0309 0.0332
21:01-22:00, Tue., 05 May. 0.0351 0.0306 0.0331
20:01-21:00, Tue., 05 May. 0.0355 0.0306 0.0329
19:01-20:00, Tue., 05 May. 0.0349 0.0301 0.0329
18:01-19:00, Tue., 05 May. 0.0368 0.0313 0.0333
17:01-18:00, Tue., 05 May. 0.0359 0.0311 0.0334
16:01-17:00, Tue., 05 May. 0.0360 0.0307 0.0334
15:01-16:00, Tue., 05 May. 0.0356 0.0305 0.0334
14:01-15:00, Tue., 05 May. 0.0356 0.0307 0.0334
13:01-14:00, Tue., 05 May. 0.0364 0.0309 0.0336
12:01-13:00, Tue., 05 May. 0.0371 0.0311 0.0338
11:01-12:00, Tue., 05 May. 0.0357 0.0304 0.0336
10:01-11:00, Tue., 05 May. 0.0353 0.0315 0.0336
09:01-10:00, Tue., 05 May. 0.0367 0.0307 0.0333
08:01-09:00, Tue., 05 May. 0.0363 0.0301 0.0335
07:01-08:00, Tue., 05 May. 0.0351 0.0304 0.0332
06:01-07:00, Tue., 05 May. 0.0365 0.0307 0.0332
05:01-06:00, Tue., 05 May. 0.0356 0.0305 0.0330
04:01-05:00, Tue., 05 May. 0.0348 0.0306 0.0328
03:01-04:00, Tue., 05 May. 0.0344 0.0310 0.0329
02:01-03:00, Tue., 05 May. 0.0359 0.0306 0.0330
01:01-02:00, Tue., 05 May. 0.0361 0.0306 0.0331
00:01-01:00, Tue., 05 May. 0.0356 0.0306 0.0334
23:01-24:00, Mon., 04 May. 0.0356 0.0310 0.0334
22:01-23:00, Mon., 04 May. 0.0366 0.0310 0.0333
21:01-22:00, Mon., 04 May. 0.0361 0.0306 0.0335
20:01-21:00, Mon., 04 May. 0.0355 0.0319 0.0337
19:01-20:00, Mon., 04 May. 0.0367 0.0318 0.0337
18:01-19:00, Mon., 04 May. 0.0360 0.0306 0.0339
17:01-18:00, Mon., 04 May. 0.0367 0.0314 0.0340
16:01-17:00, Mon., 04 May. 0.0361 0.0315 0.0342
15:01-16:00, Mon., 04 May. 0.0370 0.0321 0.0345
14:01-15:00, Mon., 04 May. 0.0366 0.0310 0.0346
13:01-14:00, Mon., 04 May. 0.0367 0.0321 0.0342
12:01-13:00, Mon., 04 May. 0.0386 0.0317 0.0342
11:01-12:00, Mon., 04 May. 0.0364 0.0315 0.0341
10:01-11:00, Mon., 04 May. 0.0357 0.0308 0.0339
09:01-10:00, Mon., 04 May. 0.0372 0.0318 0.0341
08:01-09:00, Mon., 04 May. 0.0367 0.0325 0.0345
07:01-08:00, Mon., 04 May. 0.0384 0.0328 0.0355
06:01-07:00, Mon., 04 May. 0.0429 0.0351 0.0388
05:01-06:00, Mon., 04 May. 0.0447 0.0381 0.0414
04:01-05:00, Mon., 04 May. 0.0397 0.0329 0.0364
03:01-04:00, Mon., 04 May. 0.0381 0.0323 0.0349
02:01-03:00, Mon., 04 May. 0.0355 0.0308 0.0337
01:01-02:00, Mon., 04 May. 0.0360 0.0312 0.0339
00:01-01:00, Mon., 04 May. 0.0363 0.0315 0.0338
23:01-24:00, Sun., 03 May. 0.0350 0.0312 0.0333
22:01-23:00, Sun., 03 May. 0.0360 0.0314 0.0336
21:01-22:00, Sun., 03 May. 0.0363 0.0315 0.0334
20:01-21:00, Sun., 03 May. 0.0360 0.0302 0.0337
19:01-20:00, Sun., 03 May. 0.0361 0.0315 0.0335
18:01-19:00, Sun., 03 May. 0.0362 0.0310 0.0336
17:01-18:00, Sun., 03 May. 0.0369 0.0309 0.0337
16:01-17:00, Sun., 03 May. 0.0360 0.0304 0.0335
15:01-16:00, Sun., 03 May. 0.0361 0.0318 0.0338
14:01-15:00, Sun., 03 May. 0.0365 0.0322 0.0340
13:01-14:00, Sun., 03 May. 0.0372 0.0316 0.0340
12:01-13:00, Sun., 03 May. 0.0359 0.0311 0.0337
11:01-12:00, Sun., 03 May. 0.0365 0.0317 0.0339
10:01-11:00, Sun., 03 May. 0.0371 0.0319 0.0343
09:01-10:00, Sun., 03 May. 0.0360 0.0312 0.0340
08:01-09:00, Sun., 03 May. 0.0363 0.0324 0.0340
07:01-08:00, Sun., 03 May. 0.0370 0.0315 0.0341
06:01-07:00, Sun., 03 May. 0.0371 0.0326 0.0349
05:01-06:00, Sun., 03 May. 0.0375 0.0322 0.0346
04:01-05:00, Sun., 03 May. 0.0369 0.0317 0.0343
03:01-04:00, Sun., 03 May. 0.0367 0.0314 0.0338
02:01-03:00, Sun., 03 May. 0.0362 0.0321 0.0338
01:01-02:00, Sun., 03 May. 0.0363 0.0312 0.0337
00:01-01:00, Sun., 03 May. 0.0357 0.0313 0.0335
23:01-24:00, Sat., 02 May. 0.0358 0.0312 0.0335
22:01-23:00, Sat., 02 May. 0.0363 0.0311 0.0336
21:01-22:00, Sat., 02 May. 0.0358 0.0309 0.0336
20:01-21:00, Sat., 02 May. 0.0356 0.0308 0.0334
19:01-20:00, Sat., 02 May. 0.0360 0.0310 0.0333
18:01-19:00, Sat., 02 May. 0.0357 0.0311 0.0333
17:01-18:00, Sat., 02 May. 0.0364 0.0305 0.0338
16:01-17:00, Sat., 02 May. 0.0370 0.0310 0.0335
15:01-16:00, Sat., 02 May. 0.0359 0.0305 0.0332
14:01-15:00, Sat., 02 May. 0.0356 0.0313 0.0337
13:01-14:00, Sat., 02 May. 0.0353 0.0313 0.0336
12:01-13:00, Sat., 02 May. 0.0362 0.0315 0.0336
11:01-12:00, Sat., 02 May. 0.0370 0.0308 0.0336
10:01-11:00, Sat., 02 May. 0.0359 0.0308 0.0334
09:01-10:00, Sat., 02 May. 0.0355 0.0315 0.0336