Measurement results by the hour (Chofu) 31 Dec., 2018 - 6 Jan., 2019

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. 0.0319 0.0283 0.0297
22:01-23:00, Sun., 06 Jan. 0.0319 0.0274 0.0297
21:01-22:00, Sun., 06 Jan. 0.0313 0.0279 0.0294
20:01-21:00, Sun., 06 Jan. 0.0313 0.0268 0.0295
19:01-20:00, Sun., 06 Jan. 0.0308 0.0275 0.0294
18:01-19:00, Sun., 06 Jan. 0.0306 0.0269 0.0291
17:01-18:00, Sun., 06 Jan. 0.0308 0.0275 0.0293
16:01-17:00, Sun., 06 Jan. 0.0313 0.0277 0.0291
15:01-16:00, Sun., 06 Jan. 0.0312 0.0274 0.0292
14:01-15:00, Sun., 06 Jan. 0.0315 0.0269 0.0292
13:01-14:00, Sun., 06 Jan. 0.0315 0.0274 0.0293
12:01-13:00, Sun., 06 Jan. 0.0310 0.0272 0.0295
11:01-12:00, Sun., 06 Jan. 0.0318 0.0264 0.0293
10:01-11:00, Sun., 06 Jan. 0.0314 0.0274 0.0294
09:01-10:00, Sun., 06 Jan. 0.0315 0.0271 0.0294
08:01-09:00, Sun., 06 Jan. 0.0312 0.0269 0.0293
07:01-08:00, Sun., 06 Jan. 0.0306 0.0279 0.0293
06:01-07:00, Sun., 06 Jan. 0.0314 0.0282 0.0296
05:01-06:00, Sun., 06 Jan. 0.0317 0.0275 0.0296
04:01-05:00, Sun., 06 Jan. 0.0321 0.0282 0.0298
03:01-04:00, Sun., 06 Jan. 0.0314 0.0275 0.0297
02:01-03:00, Sun., 06 Jan. 0.0314 0.0278 0.0296
01:01-02:00, Sun., 06 Jan. 0.0313 0.0282 0.0298
00:01-01:00, Sun., 06 Jan. 0.0319 0.0280 0.0301
23:01-24:00, Sat., 05 Jan. 0.0319 0.0283 0.0298
22:01-23:00, Sat., 05 Jan. 0.0320 0.0283 0.0300
21:01-22:00, Sat., 05 Jan. 0.0326 0.0275 0.0299
20:01-21:00, Sat., 05 Jan. 0.0313 0.0281 0.0298
19:01-20:00, Sat., 05 Jan. 0.0329 0.0278 0.0295
18:01-19:00, Sat., 05 Jan. 0.0314 0.0272 0.0292
17:01-18:00, Sat., 05 Jan. 0.0315 0.0270 0.0292
16:01-17:00, Sat., 05 Jan. 0.0311 0.0271 0.0289
15:01-16:00, Sat., 05 Jan. 0.0315 0.0273 0.0291
14:01-15:00, Sat., 05 Jan. 0.0315 0.0278 0.0291
13:01-14:00, Sat., 05 Jan. 0.0311 0.0269 0.0293
12:01-13:00, Sat., 05 Jan. 0.0313 0.0277 0.0298
11:01-12:00, Sat., 05 Jan. 0.0323 0.0283 0.0303
10:01-11:00, Sat., 05 Jan. 0.0334 0.0288 0.0309
09:01-10:00, Sat., 05 Jan. 0.0345 0.0301 0.0318
08:01-09:00, Sat., 05 Jan. 0.0343 0.0299 0.0321
07:01-08:00, Sat., 05 Jan. 0.0344 0.0302 0.0323
06:01-07:00, Sat., 05 Jan. 0.0348 0.0297 0.0318
05:01-06:00, Sat., 05 Jan. 0.0348 0.0301 0.0319
04:01-05:00, Sat., 05 Jan. 0.0347 0.0295 0.0319
03:01-04:00, Sat., 05 Jan. 0.0340 0.0293 0.0317
02:01-03:00, Sat., 05 Jan. 0.0332 0.0279 0.0309
01:01-02:00, Sat., 05 Jan. 0.0322 0.0287 0.0304
00:01-01:00, Sat., 05 Jan. 0.0324 0.0281 0.0299
23:01-24:00, Fri., 04 Jan. 0.0322 0.0279 0.0302
22:01-23:00, Fri., 04 Jan. 0.0321 0.0283 0.0303
21:01-22:00, Fri., 04 Jan. 0.0313 0.0286 0.0300
20:01-21:00, Fri., 04 Jan. 0.0310 0.0275 0.0292
19:01-20:00, Fri., 04 Jan. 0.0303 0.0271 0.0287
18:01-19:00, Fri., 04 Jan. 0.0302 0.0270 0.0285
17:01-18:00, Fri., 04 Jan. 0.0306 0.0264 0.0285
16:01-17:00, Fri., 04 Jan. 0.0305 0.0266 0.0284
15:01-16:00, Fri., 04 Jan. 0.0306 0.0270 0.0286
14:01-15:00, Fri., 04 Jan. 0.0306 0.0267 0.0289
13:01-14:00, Fri., 04 Jan. 0.0312 0.0269 0.0289
12:01-13:00, Fri., 04 Jan. 0.0308 0.0274 0.0289
11:01-12:00, Fri., 04 Jan. 0.0316 0.0270 0.0293
10:01-11:00, Fri., 04 Jan. 0.0319 0.0278 0.0301
09:01-10:00, Fri., 04 Jan. 0.0328 0.0281 0.0304
08:01-09:00, Fri., 04 Jan. 0.0326 0.0288 0.0304
07:01-08:00, Fri., 04 Jan. 0.0326 0.0287 0.0302
06:01-07:00, Fri., 04 Jan. 0.0320 0.0275 0.0297
05:01-06:00, Fri., 04 Jan. 0.0312 0.0276 0.0293
04:01-05:00, Fri., 04 Jan. 0.0316 0.0272 0.0292
03:01-04:00, Fri., 04 Jan. 0.0304 0.0267 0.0287
02:01-03:00, Fri., 04 Jan. 0.0309 0.0269 0.0289
01:01-02:00, Fri., 04 Jan. 0.0305 0.0267 0.0287
00:01-01:00, Fri., 04 Jan. 0.0307 0.0272 0.0287
23:01-24:00, Thu., 03 Jan. 0.0304 0.0268 0.0288
22:01-23:00, Thu., 03 Jan. 0.0306 0.0264 0.0287
21:01-22:00, Thu., 03 Jan. 0.0304 0.0268 0.0287
20:01-21:00, Thu., 03 Jan. 0.0313 0.0266 0.0289
19:01-20:00, Thu., 03 Jan. 0.0317 0.0275 0.0289
18:01-19:00, Thu., 03 Jan. 0.0307 0.0267 0.0288
17:01-18:00, Thu., 03 Jan. 0.0310 0.0269 0.0287
16:01-17:00, Thu., 03 Jan. 0.0306 0.0264 0.0286
15:01-16:00, Thu., 03 Jan. 0.0308 0.0274 0.0289
14:01-15:00, Thu., 03 Jan. 0.0307 0.0267 0.0287
13:01-14:00, Thu., 03 Jan. 0.0309 0.0272 0.0291
12:01-13:00, Thu., 03 Jan. 0.0319 0.0273 0.0293
11:01-12:00, Thu., 03 Jan. 0.0320 0.0278 0.0299
10:01-11:00, Thu., 03 Jan. 0.0327 0.0281 0.0305
09:01-10:00, Thu., 03 Jan. 0.0338 0.0295 0.0313
08:01-09:00, Thu., 03 Jan. 0.0345 0.0303 0.0324
07:01-08:00, Thu., 03 Jan. 0.0346 0.0299 0.0321
06:01-07:00, Thu., 03 Jan. 0.0347 0.0296 0.0322
05:01-06:00, Thu., 03 Jan. 0.0342 0.0305 0.0322
04:01-05:00, Thu., 03 Jan. 0.0336 0.0301 0.0316
03:01-04:00, Thu., 03 Jan. 0.0330 0.0284 0.0309
02:01-03:00, Thu., 03 Jan. 0.0332 0.0282 0.0301
01:01-02:00, Thu., 03 Jan. 0.0317 0.0266 0.0295
00:01-01:00, Thu., 03 Jan. 0.0312 0.0273 0.0289
23:01-24:00, Wed., 02 Jan. 0.0309 0.0270 0.0289
22:01-23:00, Wed., 02 Jan. 0.0306 0.0270 0.0286
21:01-22:00, Wed., 02 Jan. 0.0305 0.0267 0.0286
20:01-21:00, Wed., 02 Jan. 0.0309 0.0268 0.0288
19:01-20:00, Wed., 02 Jan. 0.0303 0.0262 0.0284
18:01-19:00, Wed., 02 Jan. 0.0306 0.0264 0.0283
17:01-18:00, Wed., 02 Jan. 0.0307 0.0263 0.0286
16:01-17:00, Wed., 02 Jan. 0.0303 0.0266 0.0284
15:01-16:00, Wed., 02 Jan. 0.0318 0.0267 0.0284
14:01-15:00, Wed., 02 Jan. 0.0310 0.0269 0.0287
13:01-14:00, Wed., 02 Jan. 0.0305 0.0270 0.0290
12:01-13:00, Wed., 02 Jan. 0.0313 0.0269 0.0290
11:01-12:00, Wed., 02 Jan. 0.0319 0.0275 0.0294
10:01-11:00, Wed., 02 Jan. 0.0315 0.0275 0.0295
09:01-10:00, Wed., 02 Jan. 0.0325 0.0276 0.0297
08:01-09:00, Wed., 02 Jan. 0.0314 0.0272 0.0299
07:01-08:00, Wed., 02 Jan. 0.0322 0.0284 0.0302
06:01-07:00, Wed., 02 Jan. 0.0318 0.0273 0.0299
05:01-06:00, Wed., 02 Jan. 0.0317 0.0285 0.0299
04:01-05:00, Wed., 02 Jan. 0.0320 0.0281 0.0300
03:01-04:00, Wed., 02 Jan. 0.0323 0.0288 0.0303
02:01-03:00, Wed., 02 Jan. 0.0322 0.0285 0.0302
01:01-02:00, Wed., 02 Jan. 0.0319 0.0281 0.0300
00:01-01:00, Wed., 02 Jan. 0.0319 0.0276 0.0296
23:01-24:00, Tue., 01 Jan. 0.0326 0.0285 0.0306
22:01-23:00, Tue., 01 Jan. 0.0336 0.0281 0.0303
21:01-22:00, Tue., 01 Jan. 0.0322 0.0282 0.0298
20:01-21:00, Tue., 01 Jan. 0.0312 0.0270 0.0292
19:01-20:00, Tue., 01 Jan. 0.0311 0.0271 0.0288
18:01-19:00, Tue., 01 Jan. 0.0303 0.0270 0.0286
17:01-18:00, Tue., 01 Jan. 0.0314 0.0270 0.0288
16:01-17:00, Tue., 01 Jan. 0.0310 0.0269 0.0288
15:01-16:00, Tue., 01 Jan. 0.0313 0.0263 0.0289
14:01-15:00, Tue., 01 Jan. 0.0304 0.0267 0.0284
13:01-14:00, Tue., 01 Jan. 0.0317 0.0267 0.0288
12:01-13:00, Tue., 01 Jan. 0.0305 0.0267 0.0290
11:01-12:00, Tue., 01 Jan. 0.0306 0.0276 0.0289
10:01-11:00, Tue., 01 Jan. 0.0317 0.0268 0.0291
09:01-10:00, Tue., 01 Jan. 0.0333 0.0282 0.0308
08:01-09:00, Tue., 01 Jan. 0.0338 0.0293 0.0313
07:01-08:00, Tue., 01 Jan. 0.0336 0.0294 0.0315
06:01-07:00, Tue., 01 Jan. 0.0343 0.0299 0.0315
05:01-06:00, Tue., 01 Jan. 0.0344 0.0291 0.0315
04:01-05:00, Tue., 01 Jan. 0.0336 0.0293 0.0316
03:01-04:00, Tue., 01 Jan. 0.0331 0.0287 0.0312
02:01-03:00, Tue., 01 Jan. 0.0331 0.0284 0.0312
01:01-02:00, Tue., 01 Jan. 0.0326 0.0295 0.0311
00:01-01:00, Tue., 01 Jan. 0.0323 0.0285 0.0306
23:01-24:00, Mon., 31 Dec. 0.0323 0.0283 0.0302
22:01-23:00, Mon., 31 Dec. 0.0324 0.0282 0.0301
21:01-22:00, Mon., 31 Dec. 0.0313 0.0275 0.0293
20:01-21:00, Mon., 31 Dec. 0.0310 0.0257 0.0286
19:01-20:00, Mon., 31 Dec. 0.0299 0.0269 0.0284
18:01-19:00, Mon., 31 Dec. 0.0305 0.0265 0.0283
17:01-18:00, Mon., 31 Dec. 0.0307 0.0254 0.0281
16:01-17:00, Mon., 31 Dec. 0.0317 0.0265 0.0283
15:01-16:00, Mon., 31 Dec. 0.0309 0.0261 0.0285
14:01-15:00, Mon., 31 Dec. 0.0303 0.0266 0.0286
13:01-14:00, Mon., 31 Dec. 0.0307 0.0261 0.0284
12:01-13:00, Mon., 31 Dec. 0.0307 0.0261 0.0282
11:01-12:00, Mon., 31 Dec. 0.0307 0.0270 0.0286
10:01-11:00, Mon., 31 Dec. 0.0302 0.0268 0.0287
09:01-10:00, Mon., 31 Dec. 0.0304 0.0273 0.0288
08:01-09:00, Mon., 31 Dec. 0.0305 0.0274 0.0287
07:01-08:00, Mon., 31 Dec. 0.0306 0.0266 0.0288
06:01-07:00, Mon., 31 Dec. 0.0320 0.0276 0.0290
05:01-06:00, Mon., 31 Dec. 0.0307 0.0265 0.0288
04:01-05:00, Mon., 31 Dec. 0.0309 0.0272 0.0290
03:01-04:00, Mon., 31 Dec. 0.0308 0.0265 0.0290
02:01-03:00, Mon., 31 Dec. 0.0307 0.0266 0.0285
01:01-02:00, Mon., 31 Dec. 0.0311 0.0271 0.0286
00:01-01:00, Mon., 31 Dec. 0.0306 0.0270 0.0287