Measurement results by the hour (Chofu) 31 Dec., 2012 - 6 Jan., 2013

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
23:01-24:00, Sun., 06 Jan. 0.0376 0.0337 0.0358
22:01-23:00, Sun., 06 Jan. 0.0374 0.0334 0.0357
21:01-22:00, Sun., 06 Jan. 0.0373 0.0343 0.0358
20:01-21:00, Sun., 06 Jan. 0.0376 0.0336 0.0360
19:01-20:00, Sun., 06 Jan. 0.0374 0.0337 0.0356
18:01-19:00, Sun., 06 Jan. 0.0395 0.0337 0.0359
17:01-18:00, Sun., 06 Jan. 0.0384 0.0340 0.0357
16:01-17:00, Sun., 06 Jan. 0.0381 0.0338 0.0357
15:01-16:00, Sun., 06 Jan. 0.0379 0.0335 0.0358
14:01-15:00, Sun., 06 Jan. 0.0374 0.0338 0.0358
13:01-14:00, Sun., 06 Jan. 0.0379 0.0339 0.0359
12:01-13:00, Sun., 06 Jan. 0.0379 0.0342 0.0360
11:01-12:00, Sun., 06 Jan. 0.0387 0.0343 0.0361
10:01-11:00, Sun., 06 Jan. 0.0392 0.0350 0.0367
09:01-10:00, Sun., 06 Jan. 0.0401 0.0349 0.0370
08:01-09:00, Sun., 06 Jan. 0.0407 0.0344 0.0373
07:01-08:00, Sun., 06 Jan. 0.0411 0.0354 0.0375
06:01-07:00, Sun., 06 Jan. 0.0413 0.0359 0.0384
05:01-06:00, Sun., 06 Jan. 0.0420 0.0361 0.0380
04:01-05:00, Sun., 06 Jan. 0.0402 0.0358 0.0379
03:01-04:00, Sun., 06 Jan. 0.0398 0.0355 0.0376
02:01-03:00, Sun., 06 Jan. 0.0398 0.0346 0.0371
01:01-02:00, Sun., 06 Jan. 0.0390 0.0345 0.0366
00:01-01:00, Sun., 06 Jan. 0.0390 0.0341 0.0365
23:01-24:00, Sat., 05 Jan. 0.0399 0.0341 0.0364
22:01-23:00, Sat., 05 Jan. 0.0396 0.0339 0.0358
21:01-22:00, Sat., 05 Jan. 0.0383 0.0338 0.0358
20:01-21:00, Sat., 05 Jan. 0.0374 0.0335 0.0357
19:01-20:00, Sat., 05 Jan. 0.0378 0.0341 0.0354
18:01-19:00, Sat., 05 Jan. 0.0396 0.0332 0.0354
17:01-18:00, Sat., 05 Jan. 0.0370 0.0334 0.0354
16:01-17:00, Sat., 05 Jan. 0.0368 0.0338 0.0352
15:01-16:00, Sat., 05 Jan. 0.0370 0.0322 0.0351
14:01-15:00, Sat., 05 Jan. 0.0373 0.0330 0.0353
13:01-14:00, Sat., 05 Jan. 0.0381 0.0332 0.0354
12:01-13:00, Sat., 05 Jan. 0.0390 0.0334 0.0353
11:01-12:00, Sat., 05 Jan. 0.0373 0.0333 0.0354
10:01-11:00, Sat., 05 Jan. 0.0374 0.0335 0.0354
09:01-10:00, Sat., 05 Jan. 0.0378 0.0334 0.0354
08:01-09:00, Sat., 05 Jan. 0.0382 0.0332 0.0356
07:01-08:00, Sat., 05 Jan. 0.0383 0.0343 0.0363
06:01-07:00, Sat., 05 Jan. 0.0397 0.0352 0.0369
05:01-06:00, Sat., 05 Jan. 0.0388 0.0350 0.0366
04:01-05:00, Sat., 05 Jan. 0.0407 0.0334 0.0360
03:01-04:00, Sat., 05 Jan. 0.0372 0.0335 0.0357
02:01-03:00, Sat., 05 Jan. 0.0387 0.0330 0.0358
01:01-02:00, Sat., 05 Jan. 0.0378 0.0338 0.0355
00:01-01:00, Sat., 05 Jan. 0.0384 0.0335 0.0357
23:01-24:00, Fri., 04 Jan. 0.0369 0.0334 0.0355
22:01-23:00, Fri., 04 Jan. 0.0373 0.0337 0.0352
21:01-22:00, Fri., 04 Jan. 0.0387 0.0337 0.0355
20:01-21:00, Fri., 04 Jan. 0.0374 0.0334 0.0355
19:01-20:00, Fri., 04 Jan. 0.0377 0.0329 0.0352
18:01-19:00, Fri., 04 Jan. 0.0371 0.0330 0.0351
17:01-18:00, Fri., 04 Jan. 0.0368 0.0336 0.0350
16:01-17:00, Fri., 04 Jan. 0.0365 0.0336 0.0352
15:01-16:00, Fri., 04 Jan. 0.0374 0.0331 0.0353
14:01-15:00, Fri., 04 Jan. 0.0372 0.0334 0.0354
13:01-14:00, Fri., 04 Jan. 0.0370 0.0339 0.0356
12:01-13:00, Fri., 04 Jan. 0.0373 0.0336 0.0354
11:01-12:00, Fri., 04 Jan. 0.0379 0.0339 0.0357
10:01-11:00, Fri., 04 Jan. 0.0384 0.0338 0.0359
09:01-10:00, Fri., 04 Jan. 0.0386 0.0338 0.0359
08:01-09:00, Fri., 04 Jan. 0.0384 0.0348 0.0364
07:01-08:00, Fri., 04 Jan. 0.0392 0.0338 0.0360
06:01-07:00, Fri., 04 Jan. 0.0382 0.0338 0.0357
05:01-06:00, Fri., 04 Jan. 0.0382 0.0334 0.0359
04:01-05:00, Fri., 04 Jan. 0.0388 0.0344 0.0360
03:01-04:00, Fri., 04 Jan. 0.0386 0.0342 0.0360
02:01-03:00, Fri., 04 Jan. 0.0388 0.0340 0.0361
01:01-02:00, Fri., 04 Jan. 0.0373 0.0332 0.0358
00:01-01:00, Fri., 04 Jan. 0.0389 0.0337 0.0360
23:01-24:00, Thu., 03 Jan. 0.0399 0.0342 0.0362
22:01-23:00, Thu., 03 Jan. 0.0376 0.0342 0.0358
21:01-22:00, Thu., 03 Jan. 0.0394 0.0333 0.0356
20:01-21:00, Thu., 03 Jan. 0.0372 0.0332 0.0355
19:01-20:00, Thu., 03 Jan. 0.0373 0.0331 0.0354
18:01-19:00, Thu., 03 Jan. 0.0372 0.0337 0.0355
17:01-18:00, Thu., 03 Jan. 0.0376 0.0333 0.0355
16:01-17:00, Thu., 03 Jan. 0.0393 0.0336 0.0356
15:01-16:00, Thu., 03 Jan. 0.0384 0.0329 0.0357
14:01-15:00, Thu., 03 Jan. 0.0380 0.0335 0.0358
13:01-14:00, Thu., 03 Jan. 0.0375 0.0338 0.0360
12:01-13:00, Thu., 03 Jan. 0.0386 0.0337 0.0358
11:01-12:00, Thu., 03 Jan. 0.0379 0.0339 0.0358
10:01-11:00, Thu., 03 Jan. 0.0383 0.0340 0.0358
09:01-10:00, Thu., 03 Jan. 0.0391 0.0340 0.0359
08:01-09:00, Thu., 03 Jan. 0.0374 0.0336 0.0357
07:01-08:00, Thu., 03 Jan. 0.0369 0.0338 0.0354
06:01-07:00, Thu., 03 Jan. 0.0379 0.0338 0.0357
05:01-06:00, Thu., 03 Jan. 0.0373 0.0342 0.0355
04:01-05:00, Thu., 03 Jan. 0.0374 0.0333 0.0355
03:01-04:00, Thu., 03 Jan. 0.0373 0.0332 0.0358
02:01-03:00, Thu., 03 Jan. 0.0403 0.0333 0.0362
01:01-02:00, Thu., 03 Jan. 0.0384 0.0331 0.0358
00:01-01:00, Thu., 03 Jan. 0.0384 0.0343 0.0360
23:01-24:00, Wed., 02 Jan. 0.0390 0.0327 0.0358
22:01-23:00, Wed., 02 Jan. 0.0396 0.0335 0.0357
21:01-22:00, Wed., 02 Jan. 0.0380 0.0334 0.0355
20:01-21:00, Wed., 02 Jan. 0.0395 0.0339 0.0355
19:01-20:00, Wed., 02 Jan. 0.0368 0.0331 0.0352
18:01-19:00, Wed., 02 Jan. 0.0373 0.0331 0.0356
17:01-18:00, Wed., 02 Jan. 0.0371 0.0333 0.0352
16:01-17:00, Wed., 02 Jan. 0.0371 0.0332 0.0353
15:01-16:00, Wed., 02 Jan. 0.0373 0.0328 0.0353
14:01-15:00, Wed., 02 Jan. 0.0377 0.0333 0.0355
13:01-14:00, Wed., 02 Jan. 0.0389 0.0332 0.0357
12:01-13:00, Wed., 02 Jan. 0.0377 0.0342 0.0356
11:01-12:00, Wed., 02 Jan. 0.0373 0.0336 0.0356
10:01-11:00, Wed., 02 Jan. 0.0372 0.0330 0.0356
09:01-10:00, Wed., 02 Jan. 0.0375 0.0331 0.0354
08:01-09:00, Wed., 02 Jan. 0.0380 0.0331 0.0355
07:01-08:00, Wed., 02 Jan. 0.0375 0.0332 0.0358
06:01-07:00, Wed., 02 Jan. 0.0378 0.0343 0.0359
05:01-06:00, Wed., 02 Jan. 0.0373 0.0341 0.0357
04:01-05:00, Wed., 02 Jan. 0.0374 0.0332 0.0356
03:01-04:00, Wed., 02 Jan. 0.0369 0.0332 0.0353
02:01-03:00, Wed., 02 Jan. 0.0373 0.0336 0.0355
01:01-02:00, Wed., 02 Jan. 0.0370 0.0338 0.0354
00:01-01:00, Wed., 02 Jan. 0.0377 0.0342 0.0357
23:01-24:00, Tue., 01 Jan. 0.0385 0.0342 0.0361
22:01-23:00, Tue., 01 Jan. 0.0375 0.0341 0.0359
21:01-22:00, Tue., 01 Jan. 0.0384 0.0344 0.0361
20:01-21:00, Tue., 01 Jan. 0.0394 0.0344 0.0362
19:01-20:00, Tue., 01 Jan. 0.0371 0.0339 0.0354
18:01-19:00, Tue., 01 Jan. 0.0372 0.0329 0.0350
17:01-18:00, Tue., 01 Jan. 0.0367 0.0332 0.0350
16:01-17:00, Tue., 01 Jan. 0.0367 0.0325 0.0347
15:01-16:00, Tue., 01 Jan. 0.0372 0.0328 0.0352
14:01-15:00, Tue., 01 Jan. 0.0378 0.0329 0.0354
13:01-14:00, Tue., 01 Jan. 0.0378 0.0330 0.0352
12:01-13:00, Tue., 01 Jan. 0.0372 0.0329 0.0353
11:01-12:00, Tue., 01 Jan. 0.0371 0.0328 0.0356
10:01-11:00, Tue., 01 Jan. 0.0383 0.0337 0.0356
09:01-10:00, Tue., 01 Jan. 0.0409 0.0345 0.0370
08:01-09:00, Tue., 01 Jan. 0.0401 0.0346 0.0371
07:01-08:00, Tue., 01 Jan. 0.0392 0.0350 0.0368
06:01-07:00, Tue., 01 Jan. 0.0407 0.0347 0.0369
05:01-06:00, Tue., 01 Jan. 0.0390 0.0344 0.0369
04:01-05:00, Tue., 01 Jan. 0.0406 0.0348 0.0363
03:01-04:00, Tue., 01 Jan. 0.0370 0.0338 0.0355
02:01-03:00, Tue., 01 Jan. 0.0386 0.0330 0.0354
01:01-02:00, Tue., 01 Jan. 0.0383 0.0335 0.0354
00:01-01:00, Tue., 01 Jan. 0.0369 0.0327 0.0353
23:01-24:00, Mon., 31 Dec. 0.0372 0.0334 0.0352
22:01-23:00, Mon., 31 Dec. 0.0370 0.0332 0.0353
21:01-22:00, Mon., 31 Dec. 0.0373 0.0334 0.0351
20:01-21:00, Mon., 31 Dec. 0.0368 0.0327 0.0352
19:01-20:00, Mon., 31 Dec. 0.0370 0.0331 0.0349
18:01-19:00, Mon., 31 Dec. 0.0380 0.0332 0.0349
17:01-18:00, Mon., 31 Dec. 0.0363 0.0330 0.0350
16:01-17:00, Mon., 31 Dec. 0.0391 0.0341 0.0360
15:01-16:00, Mon., 31 Dec. 0.0425 0.0352 0.0367
14:01-15:00, Mon., 31 Dec. 0.0390 0.0331 0.0363
13:01-14:00, Mon., 31 Dec. 0.0384 0.0339 0.0362
12:01-13:00, Mon., 31 Dec. 0.0396 0.0344 0.0366
11:01-12:00, Mon., 31 Dec. 0.0397 0.0346 0.0365
10:01-11:00, Mon., 31 Dec. 0.0408 0.0345 0.0366
09:01-10:00, Mon., 31 Dec. 0.0398 0.0352 0.0371
08:01-09:00, Mon., 31 Dec. 0.0406 0.0341 0.0369
07:01-08:00, Mon., 31 Dec. 0.0402 0.0345 0.0368
06:01-07:00, Mon., 31 Dec. 0.0397 0.0345 0.0365
05:01-06:00, Mon., 31 Dec. 0.0391 0.0344 0.0366
04:01-05:00, Mon., 31 Dec. 0.0389 0.0346 0.0360
03:01-04:00, Mon., 31 Dec. 0.0388 0.0345 0.0364
02:01-03:00, Mon., 31 Dec. 0.0402 0.0341 0.0361
01:01-02:00, Mon., 31 Dec. 0.0386 0.0338 0.0357
00:01-01:00, Mon., 31 Dec. 0.0373 0.0335 0.0356