Measurement results by the hour (Chofu) 25 Jan., 2021 - 31 Jan., 2021

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., 31 Jan. 0.0298 0.0261 0.0281
22:01-23:00, Sun., 31 Jan. 0.0296 0.0266 0.0280
21:01-22:00, Sun., 31 Jan. 0.0300 0.0263 0.0284
20:01-21:00, Sun., 31 Jan. 0.0298 0.0264 0.0283
19:01-20:00, Sun., 31 Jan. 0.0302 0.0262 0.0282
18:01-19:00, Sun., 31 Jan. 0.0311 0.0259 0.0282
17:01-18:00, Sun., 31 Jan. 0.0296 0.0252 0.0281
16:01-17:00, Sun., 31 Jan. 0.0305 0.0265 0.0281
15:01-16:00, Sun., 31 Jan. 0.0302 0.0257 0.0281
14:01-15:00, Sun., 31 Jan. 0.0310 0.0264 0.0284
13:01-14:00, Sun., 31 Jan. 0.0299 0.0264 0.0282
12:01-13:00, Sun., 31 Jan. 0.0303 0.0265 0.0282
11:01-12:00, Sun., 31 Jan. 0.0305 0.0268 0.0285
10:01-11:00, Sun., 31 Jan. 0.0300 0.0269 0.0286
09:01-10:00, Sun., 31 Jan. 0.0325 0.0276 0.0296
08:01-09:00, Sun., 31 Jan. 0.0319 0.0279 0.0301
07:01-08:00, Sun., 31 Jan. 0.0325 0.0284 0.0301
06:01-07:00, Sun., 31 Jan. 0.0325 0.0282 0.0301
05:01-06:00, Sun., 31 Jan. 0.0320 0.0267 0.0300
04:01-05:00, Sun., 31 Jan. 0.0317 0.0271 0.0295
03:01-04:00, Sun., 31 Jan. 0.0312 0.0275 0.0297
02:01-03:00, Sun., 31 Jan. 0.0311 0.0269 0.0291
01:01-02:00, Sun., 31 Jan. 0.0305 0.0268 0.0290
00:01-01:00, Sun., 31 Jan. 0.0302 0.0268 0.0286
23:01-24:00, Sat., 30 Jan. 0.0302 0.0266 0.0283
22:01-23:00, Sat., 30 Jan. 0.0308 0.0260 0.0279
21:01-22:00, Sat., 30 Jan. 0.0297 0.0256 0.0278
20:01-21:00, Sat., 30 Jan. 0.0301 0.0261 0.0277
19:01-20:00, Sat., 30 Jan. 0.0297 0.0255 0.0277
18:01-19:00, Sat., 30 Jan. 0.0293 0.0255 0.0276
17:01-18:00, Sat., 30 Jan. 0.0296 0.0251 0.0276
16:01-17:00, Sat., 30 Jan. 0.0293 0.0257 0.0274
15:01-16:00, Sat., 30 Jan. 0.0296 0.0258 0.0276
14:01-15:00, Sat., 30 Jan. 0.0298 0.0261 0.0278
13:01-14:00, Sat., 30 Jan. 0.0300 0.0259 0.0278
12:01-13:00, Sat., 30 Jan. 0.0299 0.0256 0.0276
11:01-12:00, Sat., 30 Jan. 0.0304 0.0262 0.0279
10:01-11:00, Sat., 30 Jan. 0.0299 0.0263 0.0282
09:01-10:00, Sat., 30 Jan. 0.0306 0.0260 0.0285
08:01-09:00, Sat., 30 Jan. 0.0317 0.0277 0.0294
07:01-08:00, Sat., 30 Jan. 0.0320 0.0277 0.0296
06:01-07:00, Sat., 30 Jan. 0.0315 0.0274 0.0293
05:01-06:00, Sat., 30 Jan. 0.0312 0.0269 0.0291
04:01-05:00, Sat., 30 Jan. 0.0313 0.0262 0.0287
03:01-04:00, Sat., 30 Jan. 0.0298 0.0268 0.0283
02:01-03:00, Sat., 30 Jan. 0.0300 0.0256 0.0283
01:01-02:00, Sat., 30 Jan. 0.0298 0.0263 0.0282
00:01-01:00, Sat., 30 Jan. 0.0301 0.0265 0.0282
23:01-24:00, Fri., 29 Jan. 0.0302 0.0270 0.0282
22:01-23:00, Fri., 29 Jan. 0.0301 0.0265 0.0280
21:01-22:00, Fri., 29 Jan. 0.0299 0.0262 0.0279
20:01-21:00, Fri., 29 Jan. 0.0300 0.0259 0.0279
19:01-20:00, Fri., 29 Jan. 0.0299 0.0261 0.0278
18:01-19:00, Fri., 29 Jan. 0.0297 0.0260 0.0277
17:01-18:00, Fri., 29 Jan. 0.0302 0.0258 0.0277
16:01-17:00, Fri., 29 Jan. 0.0316 0.0254 0.0280
15:01-16:00, Fri., 29 Jan. 0.0293 0.0265 0.0277
14:01-15:00, Fri., 29 Jan. 0.0295 0.0257 0.0275
13:01-14:00, Fri., 29 Jan. 0.0299 0.0260 0.0278
12:01-13:00, Fri., 29 Jan. 0.0301 0.0251 0.0277
11:01-12:00, Fri., 29 Jan. 0.0302 0.0264 0.0281
10:01-11:00, Fri., 29 Jan. 0.0303 0.0263 0.0280
09:01-10:00, Fri., 29 Jan. 0.0304 0.0261 0.0282
08:01-09:00, Fri., 29 Jan. 0.0306 0.0265 0.0287
07:01-08:00, Fri., 29 Jan. 0.0305 0.0275 0.0288
06:01-07:00, Fri., 29 Jan. 0.0302 0.0269 0.0287
05:01-06:00, Fri., 29 Jan. 0.0301 0.0269 0.0286
04:01-05:00, Fri., 29 Jan. 0.0308 0.0259 0.0283
03:01-04:00, Fri., 29 Jan. 0.0302 0.0263 0.0281
02:01-03:00, Fri., 29 Jan. 0.0302 0.0259 0.0280
01:01-02:00, Fri., 29 Jan. 0.0299 0.0262 0.0282
00:01-01:00, Fri., 29 Jan. 0.0299 0.0264 0.0279
23:01-24:00, Thu., 28 Jan. 0.0300 0.0263 0.0279
22:01-23:00, Thu., 28 Jan. 0.0299 0.0261 0.0279
21:01-22:00, Thu., 28 Jan. 0.0298 0.0260 0.0279
20:01-21:00, Thu., 28 Jan. 0.0308 0.0265 0.0285
19:01-20:00, Thu., 28 Jan. 0.0335 0.0267 0.0310
18:01-19:00, Thu., 28 Jan. 0.0360 0.0304 0.0335
17:01-18:00, Thu., 28 Jan. 0.0424 0.0313 0.0361
16:01-17:00, Thu., 28 Jan. 0.0539 0.0391 0.0463
15:01-16:00, Thu., 28 Jan. 0.0663 0.0512 0.0586
14:01-15:00, Thu., 28 Jan. 0.0643 0.0423 0.0536
13:01-14:00, Thu., 28 Jan. 0.0441 0.0348 0.0392
12:01-13:00, Thu., 28 Jan. 0.0344 0.0268 0.0300
11:01-12:00, Thu., 28 Jan. 0.0295 0.0259 0.0281
10:01-11:00, Thu., 28 Jan. 0.0307 0.0266 0.0289
09:01-10:00, Thu., 28 Jan. 0.0316 0.0263 0.0287
08:01-09:00, Thu., 28 Jan. 0.0308 0.0264 0.0286
07:01-08:00, Thu., 28 Jan. 0.0306 0.0271 0.0285
06:01-07:00, Thu., 28 Jan. 0.0304 0.0266 0.0284
05:01-06:00, Thu., 28 Jan. 0.0302 0.0263 0.0283
04:01-05:00, Thu., 28 Jan. 0.0311 0.0264 0.0285
03:01-04:00, Thu., 28 Jan. 0.0310 0.0267 0.0285
02:01-03:00, Thu., 28 Jan. 0.0293 0.0266 0.0280
01:01-02:00, Thu., 28 Jan. 0.0299 0.0257 0.0280
00:01-01:00, Thu., 28 Jan. 0.0305 0.0261 0.0280
23:01-24:00, Wed., 27 Jan. 0.0302 0.0260 0.0280
22:01-23:00, Wed., 27 Jan. 0.0305 0.0268 0.0282
21:01-22:00, Wed., 27 Jan. 0.0301 0.0266 0.0282
20:01-21:00, Wed., 27 Jan. 0.0297 0.0259 0.0280
19:01-20:00, Wed., 27 Jan. 0.0299 0.0262 0.0280
18:01-19:00, Wed., 27 Jan. 0.0301 0.0258 0.0280
17:01-18:00, Wed., 27 Jan. 0.0293 0.0261 0.0277
16:01-17:00, Wed., 27 Jan. 0.0304 0.0257 0.0275
15:01-16:00, Wed., 27 Jan. 0.0299 0.0248 0.0277
14:01-15:00, Wed., 27 Jan. 0.0298 0.0254 0.0276
13:01-14:00, Wed., 27 Jan. 0.0299 0.0254 0.0278
12:01-13:00, Wed., 27 Jan. 0.0296 0.0257 0.0276
11:01-12:00, Wed., 27 Jan. 0.0301 0.0268 0.0284
10:01-11:00, Wed., 27 Jan. 0.0297 0.0264 0.0283
09:01-10:00, Wed., 27 Jan. 0.0305 0.0258 0.0284
08:01-09:00, Wed., 27 Jan. 0.0313 0.0267 0.0286
07:01-08:00, Wed., 27 Jan. 0.0313 0.0258 0.0287
06:01-07:00, Wed., 27 Jan. 0.0304 0.0275 0.0290
05:01-06:00, Wed., 27 Jan. 0.0314 0.0265 0.0295
04:01-05:00, Wed., 27 Jan. 0.0319 0.0277 0.0301
03:01-04:00, Wed., 27 Jan. 0.0332 0.0287 0.0308
02:01-03:00, Wed., 27 Jan. 0.0325 0.0281 0.0300
01:01-02:00, Wed., 27 Jan. 0.0310 0.0267 0.0286
00:01-01:00, Wed., 27 Jan. 0.0307 0.0270 0.0286
23:01-24:00, Tue., 26 Jan. 0.0304 0.0268 0.0284
22:01-23:00, Tue., 26 Jan. 0.0301 0.0263 0.0283
21:01-22:00, Tue., 26 Jan. 0.0303 0.0255 0.0280
20:01-21:00, Tue., 26 Jan. 0.0300 0.0263 0.0282
19:01-20:00, Tue., 26 Jan. 0.0309 0.0264 0.0282
18:01-19:00, Tue., 26 Jan. 0.0307 0.0269 0.0282
17:01-18:00, Tue., 26 Jan. 0.0303 0.0256 0.0279
16:01-17:00, Tue., 26 Jan. 0.0299 0.0265 0.0280
15:01-16:00, Tue., 26 Jan. 0.0299 0.0258 0.0278
14:01-15:00, Tue., 26 Jan. 0.0296 0.0262 0.0279
13:01-14:00, Tue., 26 Jan. 0.0315 0.0259 0.0280
12:01-13:00, Tue., 26 Jan. 0.0317 0.0263 0.0286
11:01-12:00, Tue., 26 Jan. 0.0303 0.0267 0.0286
10:01-11:00, Tue., 26 Jan. 0.0300 0.0267 0.0286
09:01-10:00, Tue., 26 Jan. 0.0315 0.0274 0.0290
08:01-09:00, Tue., 26 Jan. 0.0317 0.0272 0.0294
07:01-08:00, Tue., 26 Jan. 0.0312 0.0266 0.0296
06:01-07:00, Tue., 26 Jan. 0.0317 0.0274 0.0299
05:01-06:00, Tue., 26 Jan. 0.0327 0.0281 0.0300
04:01-05:00, Tue., 26 Jan. 0.0315 0.0271 0.0297
03:01-04:00, Tue., 26 Jan. 0.0321 0.0276 0.0297
02:01-03:00, Tue., 26 Jan. 0.0317 0.0276 0.0298
01:01-02:00, Tue., 26 Jan. 0.0319 0.0276 0.0298
00:01-01:00, Tue., 26 Jan. 0.0319 0.0275 0.0292
23:01-24:00, Mon., 25 Jan. 0.0304 0.0269 0.0287
22:01-23:00, Mon., 25 Jan. 0.0305 0.0262 0.0286
21:01-22:00, Mon., 25 Jan. 0.0301 0.0259 0.0281
20:01-21:00, Mon., 25 Jan. 0.0297 0.0255 0.0277
19:01-20:00, Mon., 25 Jan. 0.0294 0.0256 0.0276
18:01-19:00, Mon., 25 Jan. 0.0293 0.0259 0.0273
17:01-18:00, Mon., 25 Jan. 0.0295 0.0256 0.0273
16:01-17:00, Mon., 25 Jan. 0.0299 0.0262 0.0275
15:01-16:00, Mon., 25 Jan. 0.0286 0.0258 0.0272
14:01-15:00, Mon., 25 Jan. 0.0294 0.0255 0.0274
13:01-14:00, Mon., 25 Jan. 0.0291 0.0259 0.0276
12:01-13:00, Mon., 25 Jan. 0.0299 0.0257 0.0280
11:01-12:00, Mon., 25 Jan. 0.0311 0.0269 0.0285
10:01-11:00, Mon., 25 Jan. 0.0311 0.0260 0.0280
09:01-10:00, Mon., 25 Jan. 0.0305 0.0266 0.0283
08:01-09:00, Mon., 25 Jan. 0.0298 0.0262 0.0282
07:01-08:00, Mon., 25 Jan. 0.0306 0.0244 0.0279
06:01-07:00, Mon., 25 Jan. 0.0297 0.0256 0.0274
05:01-06:00, Mon., 25 Jan. 0.0301 0.0263 0.0280
04:01-05:00, Mon., 25 Jan. 0.0303 0.0267 0.0283
03:01-04:00, Mon., 25 Jan. 0.0314 0.0266 0.0294
02:01-03:00, Mon., 25 Jan. 0.0347 0.0285 0.0320
01:01-02:00, Mon., 25 Jan. 0.0366 0.0316 0.0345
00:01-01:00, Mon., 25 Jan. 0.0385 0.0326 0.0345