Measurement results by the hour (Chofu) 15 Feb., 2016 - 21 Feb., 2016

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., 21 Feb. 0.0319 0.0282 0.0300
22:01-23:00, Sun., 21 Feb. 0.0335 0.0285 0.0302
21:01-22:00, Sun., 21 Feb. 0.0317 0.0284 0.0301
20:01-21:00, Sun., 21 Feb. 0.0315 0.0281 0.0297
19:01-20:00, Sun., 21 Feb. 0.0315 0.0272 0.0297
18:01-19:00, Sun., 21 Feb. 0.0324 0.0280 0.0299
17:01-18:00, Sun., 21 Feb. 0.0317 0.0282 0.0297
16:01-17:00, Sun., 21 Feb. 0.0319 0.0281 0.0297
15:01-16:00, Sun., 21 Feb. 0.0317 0.0274 0.0298
14:01-15:00, Sun., 21 Feb. 0.0318 0.0280 0.0297
13:01-14:00, Sun., 21 Feb. 0.0312 0.0273 0.0296
12:01-13:00, Sun., 21 Feb. 0.0310 0.0278 0.0296
11:01-12:00, Sun., 21 Feb. 0.0323 0.0281 0.0300
10:01-11:00, Sun., 21 Feb. 0.0347 0.0295 0.0317
09:01-10:00, Sun., 21 Feb. 0.0334 0.0290 0.0313
08:01-09:00, Sun., 21 Feb. 0.0327 0.0286 0.0307
07:01-08:00, Sun., 21 Feb. 0.0328 0.0278 0.0306
06:01-07:00, Sun., 21 Feb. 0.0340 0.0289 0.0310
05:01-06:00, Sun., 21 Feb. 0.0328 0.0286 0.0307
04:01-05:00, Sun., 21 Feb. 0.0327 0.0284 0.0304
03:01-04:00, Sun., 21 Feb. 0.0321 0.0289 0.0304
02:01-03:00, Sun., 21 Feb. 0.0328 0.0287 0.0307
01:01-02:00, Sun., 21 Feb. 0.0327 0.0286 0.0309
00:01-01:00, Sun., 21 Feb. 0.0367 0.0299 0.0331
23:01-24:00, Sat., 20 Feb. 0.0459 0.0355 0.0396
22:01-23:00, Sat., 20 Feb. 0.0478 0.0409 0.0436
21:01-22:00, Sat., 20 Feb. 0.0452 0.0372 0.0410
20:01-21:00, Sat., 20 Feb. 0.0473 0.0381 0.0428
19:01-20:00, Sat., 20 Feb. 0.0491 0.0427 0.0458
18:01-19:00, Sat., 20 Feb. 0.0506 0.0427 0.0460
17:01-18:00, Sat., 20 Feb. 0.0487 0.0427 0.0457
16:01-17:00, Sat., 20 Feb. 0.0480 0.0399 0.0446
15:01-16:00, Sat., 20 Feb. 0.0464 0.0385 0.0424
14:01-15:00, Sat., 20 Feb. 0.0424 0.0356 0.0392
13:01-14:00, Sat., 20 Feb. 0.0401 0.0319 0.0353
12:01-13:00, Sat., 20 Feb. 0.0372 0.0329 0.0350
11:01-12:00, Sat., 20 Feb. 0.0385 0.0325 0.0350
10:01-11:00, Sat., 20 Feb. 0.0352 0.0292 0.0322
09:01-10:00, Sat., 20 Feb. 0.0338 0.0290 0.0310
08:01-09:00, Sat., 20 Feb. 0.0331 0.0288 0.0311
07:01-08:00, Sat., 20 Feb. 0.0333 0.0290 0.0312
06:01-07:00, Sat., 20 Feb. 0.0336 0.0291 0.0314
05:01-06:00, Sat., 20 Feb. 0.0334 0.0289 0.0311
04:01-05:00, Sat., 20 Feb. 0.0339 0.0290 0.0314
03:01-04:00, Sat., 20 Feb. 0.0342 0.0289 0.0313
02:01-03:00, Sat., 20 Feb. 0.0331 0.0291 0.0312
01:01-02:00, Sat., 20 Feb. 0.0335 0.0295 0.0315
00:01-01:00, Sat., 20 Feb. 0.0339 0.0298 0.0318
23:01-24:00, Fri., 19 Feb. 0.0340 0.0299 0.0317
22:01-23:00, Fri., 19 Feb. 0.0332 0.0290 0.0312
21:01-22:00, Fri., 19 Feb. 0.0343 0.0290 0.0311
20:01-21:00, Fri., 19 Feb. 0.0328 0.0276 0.0304
19:01-20:00, Fri., 19 Feb. 0.0321 0.0280 0.0301
18:01-19:00, Fri., 19 Feb. 0.0326 0.0283 0.0301
17:01-18:00, Fri., 19 Feb. 0.0317 0.0281 0.0299
16:01-17:00, Fri., 19 Feb. 0.0324 0.0281 0.0298
15:01-16:00, Fri., 19 Feb. 0.0323 0.0284 0.0302
14:01-15:00, Fri., 19 Feb. 0.0325 0.0283 0.0305
13:01-14:00, Fri., 19 Feb. 0.0325 0.0277 0.0302
12:01-13:00, Fri., 19 Feb. 0.0326 0.0289 0.0307
11:01-12:00, Fri., 19 Feb. 0.0332 0.0290 0.0309
10:01-11:00, Fri., 19 Feb. 0.0342 0.0300 0.0319
09:01-10:00, Fri., 19 Feb. 0.0344 0.0300 0.0320
08:01-09:00, Fri., 19 Feb. 0.0353 0.0306 0.0326
07:01-08:00, Fri., 19 Feb. 0.0354 0.0310 0.0331
06:01-07:00, Fri., 19 Feb. 0.0349 0.0311 0.0328
05:01-06:00, Fri., 19 Feb. 0.0347 0.0310 0.0329
04:01-05:00, Fri., 19 Feb. 0.0345 0.0311 0.0328
03:01-04:00, Fri., 19 Feb. 0.0350 0.0298 0.0323
02:01-03:00, Fri., 19 Feb. 0.0337 0.0299 0.0319
01:01-02:00, Fri., 19 Feb. 0.0331 0.0296 0.0315
00:01-01:00, Fri., 19 Feb. 0.0333 0.0294 0.0312
23:01-24:00, Thu., 18 Feb. 0.0326 0.0292 0.0310
22:01-23:00, Thu., 18 Feb. 0.0333 0.0291 0.0311
21:01-22:00, Thu., 18 Feb. 0.0327 0.0293 0.0307
20:01-21:00, Thu., 18 Feb. 0.0326 0.0282 0.0306
19:01-20:00, Thu., 18 Feb. 0.0322 0.0285 0.0303
18:01-19:00, Thu., 18 Feb. 0.0320 0.0277 0.0304
17:01-18:00, Thu., 18 Feb. 0.0322 0.0286 0.0302
16:01-17:00, Thu., 18 Feb. 0.0327 0.0281 0.0302
15:01-16:00, Thu., 18 Feb. 0.0323 0.0283 0.0304
14:01-15:00, Thu., 18 Feb. 0.0326 0.0286 0.0303
13:01-14:00, Thu., 18 Feb. 0.0327 0.0284 0.0307
12:01-13:00, Thu., 18 Feb. 0.0329 0.0284 0.0310
11:01-12:00, Thu., 18 Feb. 0.0326 0.0293 0.0309
10:01-11:00, Thu., 18 Feb. 0.0328 0.0287 0.0309
09:01-10:00, Thu., 18 Feb. 0.0337 0.0295 0.0315
08:01-09:00, Thu., 18 Feb. 0.0335 0.0292 0.0316
07:01-08:00, Thu., 18 Feb. 0.0344 0.0307 0.0326
06:01-07:00, Thu., 18 Feb. 0.0341 0.0296 0.0321
05:01-06:00, Thu., 18 Feb. 0.0324 0.0291 0.0308
04:01-05:00, Thu., 18 Feb. 0.0330 0.0290 0.0312
03:01-04:00, Thu., 18 Feb. 0.0328 0.0285 0.0310
02:01-03:00, Thu., 18 Feb. 0.0339 0.0292 0.0311
01:01-02:00, Thu., 18 Feb. 0.0328 0.0290 0.0307
00:01-01:00, Thu., 18 Feb. 0.0326 0.0293 0.0308
23:01-24:00, Wed., 17 Feb. 0.0322 0.0283 0.0304
22:01-23:00, Wed., 17 Feb. 0.0325 0.0290 0.0308
21:01-22:00, Wed., 17 Feb. 0.0332 0.0288 0.0308
20:01-21:00, Wed., 17 Feb. 0.0326 0.0294 0.0309
19:01-20:00, Wed., 17 Feb. 0.0330 0.0283 0.0306
18:01-19:00, Wed., 17 Feb. 0.0324 0.0293 0.0309
17:01-18:00, Wed., 17 Feb. 0.0331 0.0295 0.0312
16:01-17:00, Wed., 17 Feb. 0.0335 0.0287 0.0311
15:01-16:00, Wed., 17 Feb. 0.0327 0.0290 0.0309
14:01-15:00, Wed., 17 Feb. 0.0328 0.0286 0.0309
13:01-14:00, Wed., 17 Feb. 0.0326 0.0282 0.0308
12:01-13:00, Wed., 17 Feb. 0.0341 0.0276 0.0306
11:01-12:00, Wed., 17 Feb. 0.0332 0.0282 0.0306
10:01-11:00, Wed., 17 Feb. 0.0326 0.0288 0.0308
09:01-10:00, Wed., 17 Feb. 0.0334 0.0291 0.0311
08:01-09:00, Wed., 17 Feb. 0.0344 0.0296 0.0317
07:01-08:00, Wed., 17 Feb. 0.0339 0.0305 0.0322
06:01-07:00, Wed., 17 Feb. 0.0342 0.0306 0.0322
05:01-06:00, Wed., 17 Feb. 0.0343 0.0305 0.0324
04:01-05:00, Wed., 17 Feb. 0.0342 0.0299 0.0317
03:01-04:00, Wed., 17 Feb. 0.0347 0.0302 0.0321
02:01-03:00, Wed., 17 Feb. 0.0336 0.0300 0.0320
01:01-02:00, Wed., 17 Feb. 0.0337 0.0296 0.0317
00:01-01:00, Wed., 17 Feb. 0.0332 0.0297 0.0317
23:01-24:00, Tue., 16 Feb. 0.0334 0.0287 0.0316
22:01-23:00, Tue., 16 Feb. 0.0327 0.0293 0.0313
21:01-22:00, Tue., 16 Feb. 0.0322 0.0286 0.0306
20:01-21:00, Tue., 16 Feb. 0.0329 0.0283 0.0304
19:01-20:00, Tue., 16 Feb. 0.0321 0.0283 0.0302
18:01-19:00, Tue., 16 Feb. 0.0317 0.0280 0.0302
17:01-18:00, Tue., 16 Feb. 0.0328 0.0278 0.0303
16:01-17:00, Tue., 16 Feb. 0.0324 0.0292 0.0305
15:01-16:00, Tue., 16 Feb. 0.0323 0.0291 0.0306
14:01-15:00, Tue., 16 Feb. 0.0329 0.0293 0.0308
13:01-14:00, Tue., 16 Feb. 0.0332 0.0293 0.0309
12:01-13:00, Tue., 16 Feb. 0.0330 0.0290 0.0309
11:01-12:00, Tue., 16 Feb. 0.0332 0.0295 0.0311
10:01-11:00, Tue., 16 Feb. 0.0340 0.0290 0.0313
09:01-10:00, Tue., 16 Feb. 0.0343 0.0300 0.0322
08:01-09:00, Tue., 16 Feb. 0.0359 0.0311 0.0334
07:01-08:00, Tue., 16 Feb. 0.0350 0.0311 0.0331
06:01-07:00, Tue., 16 Feb. 0.0342 0.0301 0.0319
05:01-06:00, Tue., 16 Feb. 0.0329 0.0291 0.0310
04:01-05:00, Tue., 16 Feb. 0.0328 0.0294 0.0310
03:01-04:00, Tue., 16 Feb. 0.0328 0.0286 0.0306
02:01-03:00, Tue., 16 Feb. 0.0328 0.0286 0.0310
01:01-02:00, Tue., 16 Feb. 0.0327 0.0278 0.0308
00:01-01:00, Tue., 16 Feb. 0.0324 0.0286 0.0309
23:01-24:00, Mon., 15 Feb. 0.0328 0.0284 0.0307
22:01-23:00, Mon., 15 Feb. 0.0337 0.0293 0.0312
21:01-22:00, Mon., 15 Feb. 0.0346 0.0292 0.0312
20:01-21:00, Mon., 15 Feb. 0.0335 0.0295 0.0315
19:01-20:00, Mon., 15 Feb. 0.0374 0.0305 0.0338
18:01-19:00, Mon., 15 Feb. 0.0423 0.0348 0.0386
17:01-18:00, Mon., 15 Feb. 0.0468 0.0394 0.0433
16:01-17:00, Mon., 15 Feb. 0.0449 0.0346 0.0393
15:01-16:00, Mon., 15 Feb. 0.0390 0.0331 0.0358
14:01-15:00, Mon., 15 Feb. 0.0369 0.0312 0.0330
13:01-14:00, Mon., 15 Feb. 0.0398 0.0314 0.0347
12:01-13:00, Mon., 15 Feb. 0.0387 0.0342 0.0367
11:01-12:00, Mon., 15 Feb. 0.0370 0.0304 0.0335
10:01-11:00, Mon., 15 Feb. 0.0339 0.0295 0.0316
09:01-10:00, Mon., 15 Feb. 0.0331 0.0293 0.0319
08:01-09:00, Mon., 15 Feb. 0.0342 0.0282 0.0314
07:01-08:00, Mon., 15 Feb. 0.0347 0.0301 0.0317
06:01-07:00, Mon., 15 Feb. 0.0341 0.0306 0.0319
05:01-06:00, Mon., 15 Feb. 0.0341 0.0291 0.0320
04:01-05:00, Mon., 15 Feb. 0.0332 0.0293 0.0315
03:01-04:00, Mon., 15 Feb. 0.0335 0.0292 0.0313
02:01-03:00, Mon., 15 Feb. 0.0338 0.0288 0.0314
01:01-02:00, Mon., 15 Feb. 0.0331 0.0292 0.0312
00:01-01:00, Mon., 15 Feb. 0.0328 0.0293 0.0311