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
00:01-01:00, Tue., 20 May. 0.0352 0.0304 0.0335
23:01-24:00, Mon., 19 May. 0.0365 0.0314 0.0339
22:01-23:00, Mon., 19 May. 0.0360 0.0308 0.0336
21:01-22:00, Mon., 19 May. 0.0357 0.0321 0.0338
20:01-21:00, Mon., 19 May. 0.0363 0.0311 0.0335
19:01-20:00, Mon., 19 May. 0.0353 0.0311 0.0335
18:01-19:00, Mon., 19 May. 0.0359 0.0311 0.0331
17:01-18:00, Mon., 19 May. 0.0355 0.0315 0.0336
16:01-17:00, Mon., 19 May. 0.0357 0.0314 0.0333
15:01-16:00, Mon., 19 May. 0.0356 0.0314 0.0335
14:01-15:00, Mon., 19 May. 0.0364 0.0310 0.0337
13:01-14:00, Mon., 19 May. 0.0361 0.0308 0.0335
12:01-13:00, Mon., 19 May. 0.0362 0.0315 0.0337
11:01-12:00, Mon., 19 May. 0.0360 0.0322 0.0338
10:01-11:00, Mon., 19 May. 0.0367 0.0314 0.0338
09:01-10:00, Mon., 19 May. 0.0353 0.0322 0.0339
08:01-09:00, Mon., 19 May. 0.0362 0.0313 0.0337
07:01-08:00, Mon., 19 May. 0.0381 0.0325 0.0343
06:01-07:00, Mon., 19 May. 0.0356 0.0309 0.0340
05:01-06:00, Mon., 19 May. 0.0370 0.0320 0.0344
04:01-05:00, Mon., 19 May. 0.0388 0.0320 0.0347
03:01-04:00, Mon., 19 May. 0.0360 0.0310 0.0341
02:01-03:00, Mon., 19 May. 0.0356 0.0313 0.0337
01:01-02:00, Mon., 19 May. 0.0367 0.0311 0.0339
00:01-01:00, Mon., 19 May. 0.0356 0.0315 0.0336
23:01-24:00, Sun., 18 May. 0.0372 0.0320 0.0343
22:01-23:00, Sun., 18 May. 0.0372 0.0316 0.0346
21:01-22:00, Sun., 18 May. 0.0368 0.0315 0.0347
20:01-21:00, Sun., 18 May. 0.0362 0.0315 0.0344
19:01-20:00, Sun., 18 May. 0.0362 0.0299 0.0339
18:01-19:00, Sun., 18 May. 0.0363 0.0315 0.0338
17:01-18:00, Sun., 18 May. 0.0365 0.0312 0.0339
16:01-17:00, Sun., 18 May. 0.0361 0.0308 0.0337
15:01-16:00, Sun., 18 May. 0.0356 0.0315 0.0336
14:01-15:00, Sun., 18 May. 0.0360 0.0314 0.0340
13:01-14:00, Sun., 18 May. 0.0366 0.0320 0.0339
12:01-13:00, Sun., 18 May. 0.0357 0.0308 0.0334
11:01-12:00, Sun., 18 May. 0.0378 0.0309 0.0341
10:01-11:00, Sun., 18 May. 0.0367 0.0310 0.0343
09:01-10:00, Sun., 18 May. 0.0368 0.0324 0.0345
08:01-09:00, Sun., 18 May. 0.0374 0.0325 0.0348
07:01-08:00, Sun., 18 May. 0.0379 0.0323 0.0350
06:01-07:00, Sun., 18 May. 0.0380 0.0311 0.0339
05:01-06:00, Sun., 18 May. 0.0362 0.0310 0.0335
04:01-05:00, Sun., 18 May. 0.0358 0.0322 0.0341
03:01-04:00, Sun., 18 May. 0.0369 0.0325 0.0346
02:01-03:00, Sun., 18 May. 0.0373 0.0322 0.0346
01:01-02:00, Sun., 18 May. 0.0372 0.0302 0.0337
00:01-01:00, Sun., 18 May. 0.0354 0.0310 0.0331
23:01-24:00, Sat., 17 May. 0.0360 0.0311 0.0330
22:01-23:00, Sat., 17 May. 0.0361 0.0303 0.0329
21:01-22:00, Sat., 17 May. 0.0350 0.0311 0.0334
20:01-21:00, Sat., 17 May. 0.0360 0.0298 0.0328
19:01-20:00, Sat., 17 May. 0.0352 0.0305 0.0330
18:01-19:00, Sat., 17 May. 0.0351 0.0310 0.0333
17:01-18:00, Sat., 17 May. 0.0357 0.0315 0.0331
16:01-17:00, Sat., 17 May. 0.0361 0.0314 0.0333
15:01-16:00, Sat., 17 May. 0.0365 0.0299 0.0337
14:01-15:00, Sat., 17 May. 0.0391 0.0325 0.0357
13:01-14:00, Sat., 17 May. 0.0388 0.0335 0.0365
12:01-13:00, Sat., 17 May. 0.0385 0.0335 0.0356
11:01-12:00, Sat., 17 May. 0.0380 0.0319 0.0341
10:01-11:00, Sat., 17 May. 0.0367 0.0318 0.0339
09:01-10:00, Sat., 17 May. 0.0370 0.0327 0.0347
08:01-09:00, Sat., 17 May. 0.0363 0.0315 0.0339
07:01-08:00, Sat., 17 May. 0.0370 0.0321 0.0341
06:01-07:00, Sat., 17 May. 0.0378 0.0320 0.0348
05:01-06:00, Sat., 17 May. 0.0407 0.0345 0.0378
04:01-05:00, Sat., 17 May. 0.0419 0.0355 0.0397
03:01-04:00, Sat., 17 May. 0.0390 0.0343 0.0367
02:01-03:00, Sat., 17 May. 0.0372 0.0326 0.0345
01:01-02:00, Sat., 17 May. 0.0360 0.0318 0.0340
00:01-01:00, Sat., 17 May. 0.0367 0.0313 0.0338
23:01-24:00, Fri., 16 May. 0.0362 0.0310 0.0336
22:01-23:00, Fri., 16 May. 0.0357 0.0311 0.0336
21:01-22:00, Fri., 16 May. 0.0359 0.0312 0.0336
20:01-21:00, Fri., 16 May. 0.0351 0.0310 0.0334
19:01-20:00, Fri., 16 May. 0.0360 0.0317 0.0338
18:01-19:00, Fri., 16 May. 0.0360 0.0311 0.0336
17:01-18:00, Fri., 16 May. 0.0355 0.0308 0.0334
16:01-17:00, Fri., 16 May. 0.0362 0.0321 0.0337
15:01-16:00, Fri., 16 May. 0.0360 0.0309 0.0338
14:01-15:00, Fri., 16 May. 0.0363 0.0312 0.0339
13:01-14:00, Fri., 16 May. 0.0377 0.0318 0.0340
12:01-13:00, Fri., 16 May. 0.0361 0.0320 0.0339
11:01-12:00, Fri., 16 May. 0.0375 0.0313 0.0341
10:01-11:00, Fri., 16 May. 0.0367 0.0321 0.0342
09:01-10:00, Fri., 16 May. 0.0366 0.0320 0.0342
08:01-09:00, Fri., 16 May. 0.0365 0.0325 0.0344
07:01-08:00, Fri., 16 May. 0.0374 0.0327 0.0351
06:01-07:00, Fri., 16 May. 0.0370 0.0323 0.0346
05:01-06:00, Fri., 16 May. 0.0365 0.0317 0.0344
04:01-05:00, Fri., 16 May. 0.0364 0.0313 0.0344
03:01-04:00, Fri., 16 May. 0.0379 0.0324 0.0346
02:01-03:00, Fri., 16 May. 0.0373 0.0323 0.0349
01:01-02:00, Fri., 16 May. 0.0370 0.0318 0.0347
00:01-01:00, Fri., 16 May. 0.0363 0.0311 0.0342
23:01-24:00, Thu., 15 May. 0.0364 0.0317 0.0338
22:01-23:00, Thu., 15 May. 0.0353 0.0310 0.0334
21:01-22:00, Thu., 15 May. 0.0358 0.0311 0.0334
20:01-21:00, Thu., 15 May. 0.0360 0.0309 0.0336
19:01-20:00, Thu., 15 May. 0.0360 0.0315 0.0336
18:01-19:00, Thu., 15 May. 0.0357 0.0315 0.0335
17:01-18:00, Thu., 15 May. 0.0355 0.0304 0.0335
16:01-17:00, Thu., 15 May. 0.0352 0.0311 0.0333
15:01-16:00, Thu., 15 May. 0.0356 0.0315 0.0334
14:01-15:00, Thu., 15 May. 0.0363 0.0316 0.0336
13:01-14:00, Thu., 15 May. 0.0353 0.0314 0.0335
12:01-13:00, Thu., 15 May. 0.0357 0.0316 0.0334
11:01-12:00, Thu., 15 May. 0.0363 0.0310 0.0332
10:01-11:00, Thu., 15 May. 0.0370 0.0318 0.0338
09:01-10:00, Thu., 15 May. 0.0369 0.0318 0.0342
08:01-09:00, Thu., 15 May. 0.0363 0.0321 0.0347
07:01-08:00, Thu., 15 May. 0.0369 0.0329 0.0348
06:01-07:00, Thu., 15 May. 0.0371 0.0325 0.0346
05:01-06:00, Thu., 15 May. 0.0367 0.0324 0.0342
04:01-05:00, Thu., 15 May. 0.0360 0.0324 0.0345
03:01-04:00, Thu., 15 May. 0.0371 0.0314 0.0341
02:01-03:00, Thu., 15 May. 0.0361 0.0320 0.0338
01:01-02:00, Thu., 15 May. 0.0370 0.0307 0.0338
00:01-01:00, Thu., 15 May. 0.0363 0.0308 0.0336
23:01-24:00, Wed., 14 May. 0.0353 0.0305 0.0331
22:01-23:00, Wed., 14 May. 0.0363 0.0314 0.0335
21:01-22:00, Wed., 14 May. 0.0355 0.0313 0.0332
20:01-21:00, Wed., 14 May. 0.0360 0.0303 0.0331
19:01-20:00, Wed., 14 May. 0.0353 0.0313 0.0333
18:01-19:00, Wed., 14 May. 0.0361 0.0307 0.0333
17:01-18:00, Wed., 14 May. 0.0352 0.0315 0.0334
16:01-17:00, Wed., 14 May. 0.0361 0.0318 0.0334
15:01-16:00, Wed., 14 May. 0.0370 0.0307 0.0333
14:01-15:00, Wed., 14 May. 0.0350 0.0308 0.0333
13:01-14:00, Wed., 14 May. 0.0356 0.0306 0.0335
12:01-13:00, Wed., 14 May. 0.0360 0.0318 0.0339
11:01-12:00, Wed., 14 May. 0.0370 0.0318 0.0340
10:01-11:00, Wed., 14 May. 0.0359 0.0316 0.0340
09:01-10:00, Wed., 14 May. 0.0369 0.0323 0.0344
08:01-09:00, Wed., 14 May. 0.0384 0.0323 0.0350
07:01-08:00, Wed., 14 May. 0.0381 0.0321 0.0350
06:01-07:00, Wed., 14 May. 0.0372 0.0309 0.0344
05:01-06:00, Wed., 14 May. 0.0368 0.0312 0.0339
04:01-05:00, Wed., 14 May. 0.0377 0.0315 0.0338
03:01-04:00, Wed., 14 May. 0.0370 0.0312 0.0339
02:01-03:00, Wed., 14 May. 0.0363 0.0319 0.0341
01:01-02:00, Wed., 14 May. 0.0365 0.0311 0.0337
00:01-01:00, Wed., 14 May. 0.0369 0.0307 0.0332
23:01-24:00, Tue., 13 May. 0.0360 0.0306 0.0335
22:01-23:00, Tue., 13 May. 0.0367 0.0313 0.0337
21:01-22:00, Tue., 13 May. 0.0354 0.0308 0.0334
20:01-21:00, Tue., 13 May. 0.0356 0.0315 0.0333
19:01-20:00, Tue., 13 May. 0.0361 0.0305 0.0334
18:01-19:00, Tue., 13 May. 0.0365 0.0301 0.0331
17:01-18:00, Tue., 13 May. 0.0356 0.0303 0.0334
16:01-17:00, Tue., 13 May. 0.0358 0.0312 0.0337
15:01-16:00, Tue., 13 May. 0.0361 0.0308 0.0336
14:01-15:00, Tue., 13 May. 0.0363 0.0304 0.0336
13:01-14:00, Tue., 13 May. 0.0356 0.0307 0.0333
12:01-13:00, Tue., 13 May. 0.0354 0.0312 0.0335
11:01-12:00, Tue., 13 May. 0.0356 0.0301 0.0334
10:01-11:00, Tue., 13 May. 0.0363 0.0311 0.0336
09:01-10:00, Tue., 13 May. 0.0366 0.0315 0.0339
08:01-09:00, Tue., 13 May. 0.0370 0.0311 0.0338
07:01-08:00, Tue., 13 May. 0.0361 0.0322 0.0340
06:01-07:00, Tue., 13 May. 0.0372 0.0321 0.0341
05:01-06:00, Tue., 13 May. 0.0357 0.0322 0.0339
04:01-05:00, Tue., 13 May. 0.0364 0.0321 0.0341
03:01-04:00, Tue., 13 May. 0.0363 0.0319 0.0338
02:01-03:00, Tue., 13 May. 0.0361 0.0314 0.0334
01:01-02:00, Tue., 13 May. 0.0355 0.0310 0.0335
00:01-01:00, Tue., 13 May. 0.0346 0.0298 0.0330
23:01-24:00, Mon., 12 May. 0.0360 0.0303 0.0330
22:01-23:00, Mon., 12 May. 0.0355 0.0306 0.0331
21:01-22:00, Mon., 12 May. 0.0353 0.0308 0.0331
20:01-21:00, Mon., 12 May. 0.0348 0.0309 0.0330
19:01-20:00, Mon., 12 May. 0.0357 0.0312 0.0331
18:01-19:00, Mon., 12 May. 0.0352 0.0308 0.0330
17:01-18:00, Mon., 12 May. 0.0364 0.0309 0.0333
16:01-17:00, Mon., 12 May. 0.0367 0.0311 0.0334
15:01-16:00, Mon., 12 May. 0.0356 0.0318 0.0335
14:01-15:00, Mon., 12 May. 0.0353 0.0312 0.0335
13:01-14:00, Mon., 12 May. 0.0360 0.0311 0.0336
12:01-13:00, Mon., 12 May. 0.0358 0.0311 0.0331
11:01-12:00, Mon., 12 May. 0.0353 0.0312 0.0333
10:01-11:00, Mon., 12 May. 0.0353 0.0308 0.0332
09:01-10:00, Mon., 12 May. 0.0363 0.0313 0.0333
08:01-09:00, Mon., 12 May. 0.0359 0.0315 0.0333
07:01-08:00, Mon., 12 May. 0.0359 0.0311 0.0332
06:01-07:00, Mon., 12 May. 0.0361 0.0317 0.0337
05:01-06:00, Mon., 12 May. 0.0374 0.0324 0.0346
04:01-05:00, Mon., 12 May. 0.0365 0.0323 0.0342
03:01-04:00, Mon., 12 May. 0.0398 0.0331 0.0360
02:01-03:00, Mon., 12 May. 0.0409 0.0355 0.0380
01:01-02:00, Mon., 12 May. 0.0398 0.0333 0.0367
00:01-01:00, Mon., 12 May. 0.0378 0.0329 0.0356
23:01-24:00, Sun., 11 May. 0.0369 0.0326 0.0349
22:01-23:00, Sun., 11 May. 0.0381 0.0329 0.0356
21:01-22:00, Sun., 11 May. 0.0377 0.0327 0.0349
20:01-21:00, Sun., 11 May. 0.0367 0.0308 0.0340
19:01-20:00, Sun., 11 May. 0.0360 0.0310 0.0334
18:01-19:00, Sun., 11 May. 0.0354 0.0319 0.0336
17:01-18:00, Sun., 11 May. 0.0361 0.0313 0.0337
16:01-17:00, Sun., 11 May. 0.0361 0.0318 0.0342
15:01-16:00, Sun., 11 May. 0.0365 0.0314 0.0340
14:01-15:00, Sun., 11 May. 0.0364 0.0322 0.0341
13:01-14:00, Sun., 11 May. 0.0363 0.0318 0.0339
12:01-13:00, Sun., 11 May. 0.0360 0.0313 0.0340
11:01-12:00, Sun., 11 May. 0.0356 0.0299 0.0336
10:01-11:00, Sun., 11 May. 0.0363 0.0315 0.0340
09:01-10:00, Sun., 11 May. 0.0366 0.0311 0.0340
08:01-09:00, Sun., 11 May. 0.0374 0.0320 0.0348
07:01-08:00, Sun., 11 May. 0.0370 0.0322 0.0350
06:01-07:00, Sun., 11 May. 0.0373 0.0332 0.0353
05:01-06:00, Sun., 11 May. 0.0369 0.0323 0.0347
04:01-05:00, Sun., 11 May. 0.0358 0.0317 0.0338
03:01-04:00, Sun., 11 May. 0.0378 0.0316 0.0339
02:01-03:00, Sun., 11 May. 0.0356 0.0313 0.0340
01:01-02:00, Sun., 11 May. 0.0369 0.0315 0.0342
00:01-01:00, Sun., 11 May. 0.0356 0.0317 0.0338
23:01-24:00, Sat., 10 May. 0.0363 0.0315 0.0342
22:01-23:00, Sat., 10 May. 0.0369 0.0322 0.0343
21:01-22:00, Sat., 10 May. 0.0360 0.0322 0.0341
20:01-21:00, Sat., 10 May. 0.0360 0.0315 0.0340
19:01-20:00, Sat., 10 May. 0.0361 0.0308 0.0338
18:01-19:00, Sat., 10 May. 0.0364 0.0307 0.0335
17:01-18:00, Sat., 10 May. 0.0358 0.0312 0.0334
16:01-17:00, Sat., 10 May. 0.0365 0.0315 0.0333
15:01-16:00, Sat., 10 May. 0.0359 0.0313 0.0329
14:01-15:00, Sat., 10 May. 0.0350 0.0304 0.0327
13:01-14:00, Sat., 10 May. 0.0347 0.0301 0.0327
12:01-13:00, Sat., 10 May. 0.0352 0.0313 0.0328
11:01-12:00, Sat., 10 May. 0.0355 0.0310 0.0327
10:01-11:00, Sat., 10 May. 0.0358 0.0301 0.0331
09:01-10:00, Sat., 10 May. 0.0363 0.0306 0.0336
08:01-09:00, Sat., 10 May. 0.0369 0.0325 0.0345
07:01-08:00, Sat., 10 May. 0.0371 0.0318 0.0347
06:01-07:00, Sat., 10 May. 0.0385 0.0326 0.0353
05:01-06:00, Sat., 10 May. 0.0395 0.0331 0.0360
04:01-05:00, Sat., 10 May. 0.0377 0.0330 0.0354
03:01-04:00, Sat., 10 May. 0.0369 0.0330 0.0351
02:01-03:00, Sat., 10 May. 0.0388 0.0329 0.0354
01:01-02:00, Sat., 10 May. 0.0391 0.0342 0.0363