Measurement results by the hour (Chofu) 30 Mar., 2020 - 5 Apr., 2020

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., 05 Apr. 0.0295 0.0255 0.0275
22:01-23:00, Sun., 05 Apr. 0.0297 0.0261 0.0277
21:01-22:00, Sun., 05 Apr. 0.0292 0.0257 0.0274
20:01-21:00, Sun., 05 Apr. 0.0289 0.0254 0.0275
19:01-20:00, Sun., 05 Apr. 0.0307 0.0259 0.0278
18:01-19:00, Sun., 05 Apr. 0.0294 0.0255 0.0276
17:01-18:00, Sun., 05 Apr. 0.0304 0.0266 0.0284
16:01-17:00, Sun., 05 Apr. 0.0332 0.0273 0.0302
15:01-16:00, Sun., 05 Apr. 0.0332 0.0264 0.0297
14:01-15:00, Sun., 05 Apr. 0.0298 0.0261 0.0278
13:01-14:00, Sun., 05 Apr. 0.0302 0.0264 0.0282
12:01-13:00, Sun., 05 Apr. 0.0309 0.0262 0.0281
11:01-12:00, Sun., 05 Apr. 0.0301 0.0256 0.0278
10:01-11:00, Sun., 05 Apr. 0.0305 0.0265 0.0281
09:01-10:00, Sun., 05 Apr. 0.0302 0.0261 0.0281
08:01-09:00, Sun., 05 Apr. 0.0297 0.0258 0.0278
07:01-08:00, Sun., 05 Apr. 0.0294 0.0259 0.0279
06:01-07:00, Sun., 05 Apr. 0.0311 0.0259 0.0276
05:01-06:00, Sun., 05 Apr. 0.0293 0.0260 0.0277
04:01-05:00, Sun., 05 Apr. 0.0307 0.0263 0.0280
03:01-04:00, Sun., 05 Apr. 0.0298 0.0260 0.0278
02:01-03:00, Sun., 05 Apr. 0.0298 0.0257 0.0278
01:01-02:00, Sun., 05 Apr. 0.0299 0.0249 0.0274
00:01-01:00, Sun., 05 Apr. 0.0294 0.0253 0.0270
23:01-24:00, Sat., 04 Apr. 0.0287 0.0255 0.0272
22:01-23:00, Sat., 04 Apr. 0.0303 0.0249 0.0270
21:01-22:00, Sat., 04 Apr. 0.0295 0.0255 0.0274
20:01-21:00, Sat., 04 Apr. 0.0291 0.0249 0.0268
19:01-20:00, Sat., 04 Apr. 0.0290 0.0253 0.0271
18:01-19:00, Sat., 04 Apr. 0.0293 0.0255 0.0271
17:01-18:00, Sat., 04 Apr. 0.0297 0.0254 0.0272
16:01-17:00, Sat., 04 Apr. 0.0292 0.0249 0.0271
15:01-16:00, Sat., 04 Apr. 0.0288 0.0252 0.0271
14:01-15:00, Sat., 04 Apr. 0.0289 0.0250 0.0268
13:01-14:00, Sat., 04 Apr. 0.0293 0.0252 0.0270
12:01-13:00, Sat., 04 Apr. 0.0290 0.0248 0.0270
11:01-12:00, Sat., 04 Apr. 0.0293 0.0250 0.0271
10:01-11:00, Sat., 04 Apr. 0.0300 0.0254 0.0274
09:01-10:00, Sat., 04 Apr. 0.0302 0.0254 0.0279
08:01-09:00, Sat., 04 Apr. 0.0306 0.0267 0.0285
07:01-08:00, Sat., 04 Apr. 0.0311 0.0268 0.0290
06:01-07:00, Sat., 04 Apr. 0.0316 0.0268 0.0291
05:01-06:00, Sat., 04 Apr. 0.0307 0.0273 0.0288
04:01-05:00, Sat., 04 Apr. 0.0311 0.0267 0.0287
03:01-04:00, Sat., 04 Apr. 0.0303 0.0266 0.0283
02:01-03:00, Sat., 04 Apr. 0.0304 0.0264 0.0280
01:01-02:00, Sat., 04 Apr. 0.0299 0.0255 0.0276
00:01-01:00, Sat., 04 Apr. 0.0295 0.0252 0.0272
23:01-24:00, Fri., 03 Apr. 0.0293 0.0252 0.0269
22:01-23:00, Fri., 03 Apr. 0.0288 0.0254 0.0269
21:01-22:00, Fri., 03 Apr. 0.0292 0.0255 0.0271
20:01-21:00, Fri., 03 Apr. 0.0288 0.0248 0.0268
19:01-20:00, Fri., 03 Apr. 0.0291 0.0249 0.0269
18:01-19:00, Fri., 03 Apr. 0.0292 0.0247 0.0269
17:01-18:00, Fri., 03 Apr. 0.0293 0.0251 0.0270
16:01-17:00, Fri., 03 Apr. 0.0292 0.0249 0.0270
15:01-16:00, Fri., 03 Apr. 0.0298 0.0252 0.0270
14:01-15:00, Fri., 03 Apr. 0.0288 0.0252 0.0268
13:01-14:00, Fri., 03 Apr. 0.0283 0.0250 0.0270
12:01-13:00, Fri., 03 Apr. 0.0294 0.0254 0.0274
11:01-12:00, Fri., 03 Apr. 0.0286 0.0255 0.0272
10:01-11:00, Fri., 03 Apr. 0.0284 0.0250 0.0270
09:01-10:00, Fri., 03 Apr. 0.0295 0.0252 0.0271
08:01-09:00, Fri., 03 Apr. 0.0298 0.0259 0.0275
07:01-08:00, Fri., 03 Apr. 0.0297 0.0260 0.0280
06:01-07:00, Fri., 03 Apr. 0.0295 0.0270 0.0282
05:01-06:00, Fri., 03 Apr. 0.0307 0.0262 0.0285
04:01-05:00, Fri., 03 Apr. 0.0306 0.0262 0.0277
03:01-04:00, Fri., 03 Apr. 0.0297 0.0252 0.0271
02:01-03:00, Fri., 03 Apr. 0.0289 0.0259 0.0271
01:01-02:00, Fri., 03 Apr. 0.0297 0.0248 0.0273
00:01-01:00, Fri., 03 Apr. 0.0288 0.0256 0.0271
23:01-24:00, Thu., 02 Apr. 0.0287 0.0255 0.0271
22:01-23:00, Thu., 02 Apr. 0.0298 0.0252 0.0272
21:01-22:00, Thu., 02 Apr. 0.0286 0.0252 0.0269
20:01-21:00, Thu., 02 Apr. 0.0296 0.0256 0.0271
19:01-20:00, Thu., 02 Apr. 0.0289 0.0253 0.0270
18:01-19:00, Thu., 02 Apr. 0.0285 0.0251 0.0269
17:01-18:00, Thu., 02 Apr. 0.0288 0.0250 0.0270
16:01-17:00, Thu., 02 Apr. 0.0283 0.0252 0.0268
15:01-16:00, Thu., 02 Apr. 0.0295 0.0250 0.0270
14:01-15:00, Thu., 02 Apr. 0.0294 0.0252 0.0271
13:01-14:00, Thu., 02 Apr. 0.0292 0.0250 0.0272
12:01-13:00, Thu., 02 Apr. 0.0285 0.0244 0.0270
11:01-12:00, Thu., 02 Apr. 0.0296 0.0248 0.0269
10:01-11:00, Thu., 02 Apr. 0.0290 0.0240 0.0266
09:01-10:00, Thu., 02 Apr. 0.0282 0.0244 0.0266
08:01-09:00, Thu., 02 Apr. 0.0284 0.0248 0.0266
07:01-08:00, Thu., 02 Apr. 0.0286 0.0249 0.0265
06:01-07:00, Thu., 02 Apr. 0.0289 0.0246 0.0268
05:01-06:00, Thu., 02 Apr. 0.0282 0.0247 0.0268
04:01-05:00, Thu., 02 Apr. 0.0285 0.0243 0.0267
03:01-04:00, Thu., 02 Apr. 0.0290 0.0248 0.0268
02:01-03:00, Thu., 02 Apr. 0.0296 0.0253 0.0272
01:01-02:00, Thu., 02 Apr. 0.0292 0.0259 0.0276
00:01-01:00, Thu., 02 Apr. 0.0299 0.0260 0.0282
23:01-24:00, Wed., 01 Apr. 0.0324 0.0275 0.0299
22:01-23:00, Wed., 01 Apr. 0.0388 0.0306 0.0342
21:01-22:00, Wed., 01 Apr. 0.0482 0.0364 0.0421
20:01-21:00, Wed., 01 Apr. 0.0541 0.0457 0.0504
19:01-20:00, Wed., 01 Apr. 0.0561 0.0486 0.0524
18:01-19:00, Wed., 01 Apr. 0.0565 0.0455 0.0507
17:01-18:00, Wed., 01 Apr. 0.0507 0.0430 0.0469
16:01-17:00, Wed., 01 Apr. 0.0488 0.0377 0.0427
15:01-16:00, Wed., 01 Apr. 0.0450 0.0373 0.0418
14:01-15:00, Wed., 01 Apr. 0.0448 0.0345 0.0406
13:01-14:00, Wed., 01 Apr. 0.0376 0.0334 0.0353
12:01-13:00, Wed., 01 Apr. 0.0373 0.0330 0.0350
11:01-12:00, Wed., 01 Apr. 0.0365 0.0294 0.0330
10:01-11:00, Wed., 01 Apr. 0.0332 0.0293 0.0311
09:01-10:00, Wed., 01 Apr. 0.0356 0.0311 0.0331
08:01-09:00, Wed., 01 Apr. 0.0361 0.0288 0.0322
07:01-08:00, Wed., 01 Apr. 0.0336 0.0280 0.0303
06:01-07:00, Wed., 01 Apr. 0.0328 0.0268 0.0290
05:01-06:00, Wed., 01 Apr. 0.0297 0.0263 0.0277
04:01-05:00, Wed., 01 Apr. 0.0303 0.0258 0.0277
03:01-04:00, Wed., 01 Apr. 0.0301 0.0256 0.0276
02:01-03:00, Wed., 01 Apr. 0.0293 0.0256 0.0276
01:01-02:00, Wed., 01 Apr. 0.0291 0.0263 0.0275
00:01-01:00, Wed., 01 Apr. 0.0297 0.0258 0.0275
23:01-24:00, Tue., 31 Mar. 0.0287 0.0254 0.0274
22:01-23:00, Tue., 31 Mar. 0.0298 0.0252 0.0273
21:01-22:00, Tue., 31 Mar. 0.0296 0.0255 0.0273
20:01-21:00, Tue., 31 Mar. 0.0295 0.0252 0.0275
19:01-20:00, Tue., 31 Mar. 0.0295 0.0259 0.0275
18:01-19:00, Tue., 31 Mar. 0.0293 0.0256 0.0277
17:01-18:00, Tue., 31 Mar. 0.0290 0.0258 0.0276
16:01-17:00, Tue., 31 Mar. 0.0287 0.0255 0.0274
15:01-16:00, Tue., 31 Mar. 0.0296 0.0250 0.0276
14:01-15:00, Tue., 31 Mar. 0.0294 0.0261 0.0280
13:01-14:00, Tue., 31 Mar. 0.0297 0.0260 0.0280
12:01-13:00, Tue., 31 Mar. 0.0303 0.0259 0.0282
11:01-12:00, Tue., 31 Mar. 0.0309 0.0265 0.0284
10:01-11:00, Tue., 31 Mar. 0.0306 0.0269 0.0286
09:01-10:00, Tue., 31 Mar. 0.0308 0.0273 0.0288
08:01-09:00, Tue., 31 Mar. 0.0312 0.0269 0.0288
07:01-08:00, Tue., 31 Mar. 0.0304 0.0271 0.0287
06:01-07:00, Tue., 31 Mar. 0.0310 0.0256 0.0286
05:01-06:00, Tue., 31 Mar. 0.0303 0.0270 0.0288
04:01-05:00, Tue., 31 Mar. 0.0307 0.0267 0.0288
03:01-04:00, Tue., 31 Mar. 0.0301 0.0271 0.0285
02:01-03:00, Tue., 31 Mar. 0.0301 0.0253 0.0282
01:01-02:00, Tue., 31 Mar. 0.0300 0.0259 0.0283
00:01-01:00, Tue., 31 Mar. 0.0300 0.0258 0.0279
23:01-24:00, Mon., 30 Mar. 0.0295 0.0257 0.0277
22:01-23:00, Mon., 30 Mar. 0.0293 0.0257 0.0275
21:01-22:00, Mon., 30 Mar. 0.0292 0.0249 0.0271
20:01-21:00, Mon., 30 Mar. 0.0283 0.0249 0.0267
19:01-20:00, Mon., 30 Mar. 0.0295 0.0239 0.0266
18:01-19:00, Mon., 30 Mar. 0.0285 0.0240 0.0266
17:01-18:00, Mon., 30 Mar. 0.0290 0.0248 0.0266
16:01-17:00, Mon., 30 Mar. 0.0280 0.0244 0.0264
15:01-16:00, Mon., 30 Mar. 0.0286 0.0243 0.0265
14:01-15:00, Mon., 30 Mar. 0.0285 0.0247 0.0267
13:01-14:00, Mon., 30 Mar. 0.0289 0.0253 0.0270
12:01-13:00, Mon., 30 Mar. 0.0288 0.0251 0.0269
11:01-12:00, Mon., 30 Mar. 0.0280 0.0247 0.0266
10:01-11:00, Mon., 30 Mar. 0.0283 0.0241 0.0263
09:01-10:00, Mon., 30 Mar. 0.0279 0.0242 0.0261
08:01-09:00, Mon., 30 Mar. 0.0275 0.0243 0.0259
07:01-08:00, Mon., 30 Mar. 0.0271 0.0236 0.0257
06:01-07:00, Mon., 30 Mar. 0.0274 0.0236 0.0255
05:01-06:00, Mon., 30 Mar. 0.0270 0.0237 0.0254
04:01-05:00, Mon., 30 Mar. 0.0271 0.0242 0.0257
03:01-04:00, Mon., 30 Mar. 0.0278 0.0237 0.0254
02:01-03:00, Mon., 30 Mar. 0.0266 0.0232 0.0252
01:01-02:00, Mon., 30 Mar. 0.0270 0.0218 0.0249
00:01-01:00, Mon., 30 Mar. 0.0267 0.0236 0.0250