Measurement results by the hour (Chofu) 25 Oct., 2021 - 31 Oct., 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 Oct. 0.0305 0.0269 0.0286
22:01-23:00, Sun., 31 Oct. 0.0312 0.0264 0.0286
21:01-22:00, Sun., 31 Oct. 0.0303 0.0267 0.0283
20:01-21:00, Sun., 31 Oct. 0.0306 0.0266 0.0283
19:01-20:00, Sun., 31 Oct. 0.0313 0.0266 0.0292
18:01-19:00, Sun., 31 Oct. 0.0370 0.0294 0.0324
17:01-18:00, Sun., 31 Oct. 0.0372 0.0309 0.0343
16:01-17:00, Sun., 31 Oct. 0.0369 0.0274 0.0318
15:01-16:00, Sun., 31 Oct. 0.0351 0.0288 0.0317
14:01-15:00, Sun., 31 Oct. 0.0359 0.0311 0.0335
13:01-14:00, Sun., 31 Oct. 0.0372 0.0305 0.0339
12:01-13:00, Sun., 31 Oct. 0.0366 0.0283 0.0341
11:01-12:00, Sun., 31 Oct. 0.0321 0.0271 0.0298
10:01-11:00, Sun., 31 Oct. 0.0307 0.0267 0.0289
09:01-10:00, Sun., 31 Oct. 0.0307 0.0269 0.0291
08:01-09:00, Sun., 31 Oct. 0.0315 0.0278 0.0296
07:01-08:00, Sun., 31 Oct. 0.0321 0.0272 0.0298
06:01-07:00, Sun., 31 Oct. 0.0316 0.0269 0.0293
05:01-06:00, Sun., 31 Oct. 0.0313 0.0274 0.0293
04:01-05:00, Sun., 31 Oct. 0.0308 0.0269 0.0293
03:01-04:00, Sun., 31 Oct. 0.0311 0.0272 0.0290
02:01-03:00, Sun., 31 Oct. 0.0311 0.0267 0.0288
01:01-02:00, Sun., 31 Oct. 0.0310 0.0271 0.0290
00:01-01:00, Sun., 31 Oct. 0.0306 0.0270 0.0285
23:01-24:00, Sat., 30 Oct. 0.0305 0.0265 0.0287
22:01-23:00, Sat., 30 Oct. 0.0312 0.0263 0.0290
21:01-22:00, Sat., 30 Oct. 0.0308 0.0270 0.0291
20:01-21:00, Sat., 30 Oct. 0.0306 0.0263 0.0283
19:01-20:00, Sat., 30 Oct. 0.0301 0.0259 0.0281
18:01-19:00, Sat., 30 Oct. 0.0297 0.0262 0.0278
17:01-18:00, Sat., 30 Oct. 0.0288 0.0260 0.0276
16:01-17:00, Sat., 30 Oct. 0.0292 0.0258 0.0274
15:01-16:00, Sat., 30 Oct. 0.0301 0.0263 0.0278
14:01-15:00, Sat., 30 Oct. 0.0301 0.0256 0.0277
13:01-14:00, Sat., 30 Oct. 0.0292 0.0262 0.0278
12:01-13:00, Sat., 30 Oct. 0.0298 0.0264 0.0280
11:01-12:00, Sat., 30 Oct. 0.0306 0.0269 0.0285
10:01-11:00, Sat., 30 Oct. 0.0304 0.0274 0.0290
09:01-10:00, Sat., 30 Oct. 0.0317 0.0278 0.0299
08:01-09:00, Sat., 30 Oct. 0.0318 0.0280 0.0300
07:01-08:00, Sat., 30 Oct. 0.0324 0.0282 0.0301
06:01-07:00, Sat., 30 Oct. 0.0327 0.0287 0.0302
05:01-06:00, Sat., 30 Oct. 0.0316 0.0284 0.0301
04:01-05:00, Sat., 30 Oct. 0.0322 0.0279 0.0299
03:01-04:00, Sat., 30 Oct. 0.0316 0.0275 0.0297
02:01-03:00, Sat., 30 Oct. 0.0312 0.0279 0.0298
01:01-02:00, Sat., 30 Oct. 0.0314 0.0269 0.0293
00:01-01:00, Sat., 30 Oct. 0.0314 0.0275 0.0292
23:01-24:00, Fri., 29 Oct. 0.0305 0.0271 0.0290
22:01-23:00, Fri., 29 Oct. 0.0306 0.0271 0.0286
21:01-22:00, Fri., 29 Oct. 0.0300 0.0259 0.0283
20:01-21:00, Fri., 29 Oct. 0.0296 0.0261 0.0279
19:01-20:00, Fri., 29 Oct. 0.0303 0.0262 0.0279
18:01-19:00, Fri., 29 Oct. 0.0293 0.0259 0.0279
17:01-18:00, Fri., 29 Oct. 0.0294 0.0257 0.0277
16:01-17:00, Fri., 29 Oct. 0.0307 0.0257 0.0280
15:01-16:00, Fri., 29 Oct. 0.0298 0.0262 0.0278
14:01-15:00, Fri., 29 Oct. 0.0295 0.0259 0.0278
13:01-14:00, Fri., 29 Oct. 0.0293 0.0264 0.0279
12:01-13:00, Fri., 29 Oct. 0.0309 0.0259 0.0282
11:01-12:00, Fri., 29 Oct. 0.0306 0.0263 0.0282
10:01-11:00, Fri., 29 Oct. 0.0303 0.0266 0.0282
09:01-10:00, Fri., 29 Oct. 0.0305 0.0259 0.0282
08:01-09:00, Fri., 29 Oct. 0.0302 0.0255 0.0282
07:01-08:00, Fri., 29 Oct. 0.0311 0.0262 0.0283
06:01-07:00, Fri., 29 Oct. 0.0310 0.0265 0.0280
05:01-06:00, Fri., 29 Oct. 0.0302 0.0265 0.0282
04:01-05:00, Fri., 29 Oct. 0.0299 0.0266 0.0280
03:01-04:00, Fri., 29 Oct. 0.0306 0.0266 0.0282
02:01-03:00, Fri., 29 Oct. 0.0302 0.0253 0.0278
01:01-02:00, Fri., 29 Oct. 0.0296 0.0266 0.0280
00:01-01:00, Fri., 29 Oct. 0.0294 0.0267 0.0279
23:01-24:00, Thu., 28 Oct. 0.0302 0.0261 0.0278
22:01-23:00, Thu., 28 Oct. 0.0297 0.0261 0.0279
21:01-22:00, Thu., 28 Oct. 0.0304 0.0263 0.0280
20:01-21:00, Thu., 28 Oct. 0.0298 0.0257 0.0278
19:01-20:00, Thu., 28 Oct. 0.0292 0.0260 0.0277
18:01-19:00, Thu., 28 Oct. 0.0303 0.0260 0.0278
17:01-18:00, Thu., 28 Oct. 0.0290 0.0255 0.0272
16:01-17:00, Thu., 28 Oct. 0.0293 0.0247 0.0272
15:01-16:00, Thu., 28 Oct. 0.0304 0.0256 0.0274
14:01-15:00, Thu., 28 Oct. 0.0295 0.0257 0.0274
13:01-14:00, Thu., 28 Oct. 0.0291 0.0258 0.0273
12:01-13:00, Thu., 28 Oct. 0.0296 0.0256 0.0273
11:01-12:00, Thu., 28 Oct. 0.0296 0.0259 0.0275
10:01-11:00, Thu., 28 Oct. 0.0296 0.0261 0.0277
09:01-10:00, Thu., 28 Oct. 0.0303 0.0264 0.0281
08:01-09:00, Thu., 28 Oct. 0.0308 0.0266 0.0287
07:01-08:00, Thu., 28 Oct. 0.0307 0.0274 0.0290
06:01-07:00, Thu., 28 Oct. 0.0308 0.0251 0.0284
05:01-06:00, Thu., 28 Oct. 0.0302 0.0259 0.0279
04:01-05:00, Thu., 28 Oct. 0.0300 0.0255 0.0276
03:01-04:00, Thu., 28 Oct. 0.0294 0.0259 0.0274
02:01-03:00, Thu., 28 Oct. 0.0304 0.0252 0.0272
01:01-02:00, Thu., 28 Oct. 0.0303 0.0256 0.0275
00:01-01:00, Thu., 28 Oct. 0.0309 0.0257 0.0274
23:01-24:00, Wed., 27 Oct. 0.0292 0.0256 0.0272
22:01-23:00, Wed., 27 Oct. 0.0286 0.0256 0.0273
21:01-22:00, Wed., 27 Oct. 0.0290 0.0252 0.0271
20:01-21:00, Wed., 27 Oct. 0.0295 0.0251 0.0274
19:01-20:00, Wed., 27 Oct. 0.0289 0.0246 0.0274
18:01-19:00, Wed., 27 Oct. 0.0296 0.0248 0.0272
17:01-18:00, Wed., 27 Oct. 0.0291 0.0257 0.0272
16:01-17:00, Wed., 27 Oct. 0.0296 0.0255 0.0272
15:01-16:00, Wed., 27 Oct. 0.0296 0.0254 0.0271
14:01-15:00, Wed., 27 Oct. 0.0294 0.0260 0.0276
13:01-14:00, Wed., 27 Oct. 0.0295 0.0257 0.0278
12:01-13:00, Wed., 27 Oct. 0.0317 0.0266 0.0289
11:01-12:00, Wed., 27 Oct. 0.0306 0.0264 0.0287
10:01-11:00, Wed., 27 Oct. 0.0313 0.0272 0.0296
09:01-10:00, Wed., 27 Oct. 0.0300 0.0262 0.0282
08:01-09:00, Wed., 27 Oct. 0.0295 0.0259 0.0279
07:01-08:00, Wed., 27 Oct. 0.0292 0.0258 0.0276
06:01-07:00, Wed., 27 Oct. 0.0291 0.0256 0.0276
05:01-06:00, Wed., 27 Oct. 0.0295 0.0257 0.0276
04:01-05:00, Wed., 27 Oct. 0.0295 0.0261 0.0276
03:01-04:00, Wed., 27 Oct. 0.0295 0.0259 0.0277
02:01-03:00, Wed., 27 Oct. 0.0285 0.0251 0.0272
01:01-02:00, Wed., 27 Oct. 0.0294 0.0253 0.0272
00:01-01:00, Wed., 27 Oct. 0.0291 0.0256 0.0273
23:01-24:00, Tue., 26 Oct. 0.0287 0.0257 0.0270
22:01-23:00, Tue., 26 Oct. 0.0287 0.0252 0.0270
21:01-22:00, Tue., 26 Oct. 0.0285 0.0248 0.0269
20:01-21:00, Tue., 26 Oct. 0.0290 0.0253 0.0267
19:01-20:00, Tue., 26 Oct. 0.0285 0.0248 0.0268
18:01-19:00, Tue., 26 Oct. 0.0290 0.0249 0.0265
17:01-18:00, Tue., 26 Oct. 0.0279 0.0246 0.0265
16:01-17:00, Tue., 26 Oct. 0.0281 0.0251 0.0263
15:01-16:00, Tue., 26 Oct. 0.0285 0.0238 0.0265
14:01-15:00, Tue., 26 Oct. 0.0295 0.0246 0.0265
13:01-14:00, Tue., 26 Oct. 0.0290 0.0248 0.0265
12:01-13:00, Tue., 26 Oct. 0.0287 0.0253 0.0267
11:01-12:00, Tue., 26 Oct. 0.0291 0.0254 0.0270
10:01-11:00, Tue., 26 Oct. 0.0288 0.0252 0.0269
09:01-10:00, Tue., 26 Oct. 0.0291 0.0254 0.0272
08:01-09:00, Tue., 26 Oct. 0.0297 0.0265 0.0281
07:01-08:00, Tue., 26 Oct. 0.0324 0.0270 0.0297
06:01-07:00, Tue., 26 Oct. 0.0348 0.0289 0.0321
05:01-06:00, Tue., 26 Oct. 0.0378 0.0304 0.0344
04:01-05:00, Tue., 26 Oct. 0.0433 0.0361 0.0391
03:01-04:00, Tue., 26 Oct. 0.0450 0.0361 0.0406
02:01-03:00, Tue., 26 Oct. 0.0440 0.0367 0.0407
01:01-02:00, Tue., 26 Oct. 0.0401 0.0353 0.0373
00:01-01:00, Tue., 26 Oct. 0.0419 0.0363 0.0389
23:01-24:00, Mon., 25 Oct. 0.0408 0.0341 0.0373
22:01-23:00, Mon., 25 Oct. 0.0365 0.0317 0.0342
21:01-22:00, Mon., 25 Oct. 0.0369 0.0270 0.0330
20:01-21:00, Mon., 25 Oct. 0.0298 0.0253 0.0279
19:01-20:00, Mon., 25 Oct. 0.0295 0.0258 0.0277
18:01-19:00, Mon., 25 Oct. 0.0289 0.0260 0.0277
17:01-18:00, Mon., 25 Oct. 0.0293 0.0262 0.0279
16:01-17:00, Mon., 25 Oct. 0.0306 0.0269 0.0284
15:01-16:00, Mon., 25 Oct. 0.0297 0.0264 0.0279
14:01-15:00, Mon., 25 Oct. 0.0296 0.0254 0.0277
13:01-14:00, Mon., 25 Oct. 0.0295 0.0264 0.0279
12:01-13:00, Mon., 25 Oct. 0.0305 0.0257 0.0281
11:01-12:00, Mon., 25 Oct. 0.0302 0.0260 0.0283
10:01-11:00, Mon., 25 Oct. 0.0304 0.0264 0.0285
09:01-10:00, Mon., 25 Oct. 0.0310 0.0259 0.0290
08:01-09:00, Mon., 25 Oct. 0.0309 0.0283 0.0295
07:01-08:00, Mon., 25 Oct. 0.0314 0.0280 0.0295
06:01-07:00, Mon., 25 Oct. 0.0312 0.0260 0.0290
05:01-06:00, Mon., 25 Oct. 0.0305 0.0268 0.0290
04:01-05:00, Mon., 25 Oct. 0.0315 0.0272 0.0292
03:01-04:00, Mon., 25 Oct. 0.0315 0.0276 0.0295
02:01-03:00, Mon., 25 Oct. 0.0316 0.0278 0.0296
01:01-02:00, Mon., 25 Oct. 0.0310 0.0271 0.0292
00:01-01:00, Mon., 25 Oct. 0.0301 0.0271 0.0287