Measurement results by the hour (Chofu) 25 Dec., 2017 - 31 Dec., 2017

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 Dec. 0.0340 0.0293 0.0320
22:01-23:00, Sun., 31 Dec. 0.0332 0.0285 0.0306
21:01-22:00, Sun., 31 Dec. 0.0328 0.0271 0.0296
20:01-21:00, Sun., 31 Dec. 0.0318 0.0278 0.0293
19:01-20:00, Sun., 31 Dec. 0.0315 0.0266 0.0291
18:01-19:00, Sun., 31 Dec. 0.0316 0.0277 0.0292
17:01-18:00, Sun., 31 Dec. 0.0319 0.0273 0.0294
16:01-17:00, Sun., 31 Dec. 0.0320 0.0273 0.0295
15:01-16:00, Sun., 31 Dec. 0.0320 0.0271 0.0293
14:01-15:00, Sun., 31 Dec. 0.0322 0.0268 0.0293
13:01-14:00, Sun., 31 Dec. 0.0317 0.0283 0.0301
12:01-13:00, Sun., 31 Dec. 0.0325 0.0279 0.0304
11:01-12:00, Sun., 31 Dec. 0.0312 0.0277 0.0296
10:01-11:00, Sun., 31 Dec. 0.0328 0.0274 0.0301
09:01-10:00, Sun., 31 Dec. 0.0321 0.0281 0.0298
08:01-09:00, Sun., 31 Dec. 0.0326 0.0277 0.0299
07:01-08:00, Sun., 31 Dec. 0.0324 0.0287 0.0307
06:01-07:00, Sun., 31 Dec. 0.0342 0.0293 0.0310
05:01-06:00, Sun., 31 Dec. 0.0329 0.0296 0.0314
04:01-05:00, Sun., 31 Dec. 0.0338 0.0287 0.0314
03:01-04:00, Sun., 31 Dec. 0.0338 0.0299 0.0313
02:01-03:00, Sun., 31 Dec. 0.0328 0.0284 0.0308
01:01-02:00, Sun., 31 Dec. 0.0318 0.0272 0.0297
00:01-01:00, Sun., 31 Dec. 0.0314 0.0272 0.0292
23:01-24:00, Sat., 30 Dec. 0.0311 0.0272 0.0292
22:01-23:00, Sat., 30 Dec. 0.0314 0.0266 0.0287
21:01-22:00, Sat., 30 Dec. 0.0309 0.0270 0.0289
20:01-21:00, Sat., 30 Dec. 0.0304 0.0268 0.0288
19:01-20:00, Sat., 30 Dec. 0.0310 0.0269 0.0289
18:01-19:00, Sat., 30 Dec. 0.0307 0.0276 0.0287
17:01-18:00, Sat., 30 Dec. 0.0306 0.0270 0.0285
16:01-17:00, Sat., 30 Dec. 0.0310 0.0270 0.0284
15:01-16:00, Sat., 30 Dec. 0.0301 0.0266 0.0287
14:01-15:00, Sat., 30 Dec. 0.0309 0.0267 0.0289
13:01-14:00, Sat., 30 Dec. 0.0313 0.0267 0.0290
12:01-13:00, Sat., 30 Dec. 0.0307 0.0271 0.0291
11:01-12:00, Sat., 30 Dec. 0.0307 0.0274 0.0290
10:01-11:00, Sat., 30 Dec. 0.0316 0.0272 0.0291
09:01-10:00, Sat., 30 Dec. 0.0316 0.0271 0.0292
08:01-09:00, Sat., 30 Dec. 0.0325 0.0284 0.0302
07:01-08:00, Sat., 30 Dec. 0.0316 0.0273 0.0293
06:01-07:00, Sat., 30 Dec. 0.0311 0.0271 0.0291
05:01-06:00, Sat., 30 Dec. 0.0314 0.0273 0.0292
04:01-05:00, Sat., 30 Dec. 0.0306 0.0269 0.0289
03:01-04:00, Sat., 30 Dec. 0.0314 0.0269 0.0290
02:01-03:00, Sat., 30 Dec. 0.0313 0.0274 0.0291
01:01-02:00, Sat., 30 Dec. 0.0307 0.0269 0.0289
00:01-01:00, Sat., 30 Dec. 0.0316 0.0281 0.0295
23:01-24:00, Fri., 29 Dec. 0.0318 0.0278 0.0295
22:01-23:00, Fri., 29 Dec. 0.0305 0.0271 0.0291
21:01-22:00, Fri., 29 Dec. 0.0312 0.0274 0.0294
20:01-21:00, Fri., 29 Dec. 0.0310 0.0266 0.0289
19:01-20:00, Fri., 29 Dec. 0.0310 0.0264 0.0285
18:01-19:00, Fri., 29 Dec. 0.0307 0.0273 0.0288
17:01-18:00, Fri., 29 Dec. 0.0308 0.0260 0.0285
16:01-17:00, Fri., 29 Dec. 0.0303 0.0261 0.0284
15:01-16:00, Fri., 29 Dec. 0.0304 0.0266 0.0285
14:01-15:00, Fri., 29 Dec. 0.0308 0.0267 0.0287
13:01-14:00, Fri., 29 Dec. 0.0314 0.0266 0.0287
12:01-13:00, Fri., 29 Dec. 0.0310 0.0272 0.0291
11:01-12:00, Fri., 29 Dec. 0.0303 0.0271 0.0288
10:01-11:00, Fri., 29 Dec. 0.0313 0.0274 0.0291
09:01-10:00, Fri., 29 Dec. 0.0316 0.0269 0.0294
08:01-09:00, Fri., 29 Dec. 0.0324 0.0276 0.0303
07:01-08:00, Fri., 29 Dec. 0.0309 0.0271 0.0291
06:01-07:00, Fri., 29 Dec. 0.0334 0.0268 0.0299
05:01-06:00, Fri., 29 Dec. 0.0337 0.0295 0.0317
04:01-05:00, Fri., 29 Dec. 0.0333 0.0290 0.0310
03:01-04:00, Fri., 29 Dec. 0.0329 0.0282 0.0308
02:01-03:00, Fri., 29 Dec. 0.0321 0.0285 0.0305
01:01-02:00, Fri., 29 Dec. 0.0338 0.0281 0.0301
00:01-01:00, Fri., 29 Dec. 0.0312 0.0269 0.0293
23:01-24:00, Thu., 28 Dec. 0.0311 0.0270 0.0291
22:01-23:00, Thu., 28 Dec. 0.0314 0.0261 0.0286
21:01-22:00, Thu., 28 Dec. 0.0305 0.0270 0.0284
20:01-21:00, Thu., 28 Dec. 0.0303 0.0267 0.0285
19:01-20:00, Thu., 28 Dec. 0.0304 0.0262 0.0284
18:01-19:00, Thu., 28 Dec. 0.0298 0.0257 0.0282
17:01-18:00, Thu., 28 Dec. 0.0302 0.0264 0.0283
16:01-17:00, Thu., 28 Dec. 0.0301 0.0257 0.0281
15:01-16:00, Thu., 28 Dec. 0.0303 0.0264 0.0284
14:01-15:00, Thu., 28 Dec. 0.0302 0.0269 0.0286
13:01-14:00, Thu., 28 Dec. 0.0312 0.0275 0.0291
12:01-13:00, Thu., 28 Dec. 0.0312 0.0266 0.0292
11:01-12:00, Thu., 28 Dec. 0.0308 0.0275 0.0295
10:01-11:00, Thu., 28 Dec. 0.0324 0.0279 0.0302
09:01-10:00, Thu., 28 Dec. 0.0335 0.0285 0.0311
08:01-09:00, Thu., 28 Dec. 0.0339 0.0299 0.0319
07:01-08:00, Thu., 28 Dec. 0.0344 0.0290 0.0315
06:01-07:00, Thu., 28 Dec. 0.0328 0.0287 0.0312
05:01-06:00, Thu., 28 Dec. 0.0333 0.0282 0.0307
04:01-05:00, Thu., 28 Dec. 0.0316 0.0285 0.0299
03:01-04:00, Thu., 28 Dec. 0.0319 0.0276 0.0295
02:01-03:00, Thu., 28 Dec. 0.0309 0.0278 0.0295
01:01-02:00, Thu., 28 Dec. 0.0313 0.0272 0.0293
00:01-01:00, Thu., 28 Dec. 0.0309 0.0273 0.0291
23:01-24:00, Wed., 27 Dec. 0.0310 0.0273 0.0290
22:01-23:00, Wed., 27 Dec. 0.0304 0.0271 0.0289
21:01-22:00, Wed., 27 Dec. 0.0306 0.0268 0.0290
20:01-21:00, Wed., 27 Dec. 0.0306 0.0270 0.0290
19:01-20:00, Wed., 27 Dec. 0.0311 0.0271 0.0291
18:01-19:00, Wed., 27 Dec. 0.0309 0.0264 0.0292
17:01-18:00, Wed., 27 Dec. 0.0307 0.0268 0.0288
16:01-17:00, Wed., 27 Dec. 0.0305 0.0271 0.0290
15:01-16:00, Wed., 27 Dec. 0.0311 0.0268 0.0290
14:01-15:00, Wed., 27 Dec. 0.0310 0.0271 0.0291
13:01-14:00, Wed., 27 Dec. 0.0310 0.0276 0.0292
12:01-13:00, Wed., 27 Dec. 0.0318 0.0279 0.0294
11:01-12:00, Wed., 27 Dec. 0.0318 0.0269 0.0296
10:01-11:00, Wed., 27 Dec. 0.0311 0.0277 0.0294
09:01-10:00, Wed., 27 Dec. 0.0312 0.0276 0.0297
08:01-09:00, Wed., 27 Dec. 0.0322 0.0275 0.0299
07:01-08:00, Wed., 27 Dec. 0.0320 0.0273 0.0301
06:01-07:00, Wed., 27 Dec. 0.0315 0.0275 0.0297
05:01-06:00, Wed., 27 Dec. 0.0318 0.0270 0.0293
04:01-05:00, Wed., 27 Dec. 0.0319 0.0280 0.0296
03:01-04:00, Wed., 27 Dec. 0.0318 0.0282 0.0299
02:01-03:00, Wed., 27 Dec. 0.0317 0.0281 0.0297
01:01-02:00, Wed., 27 Dec. 0.0317 0.0283 0.0299
00:01-01:00, Wed., 27 Dec. 0.0322 0.0268 0.0296
23:01-24:00, Tue., 26 Dec. 0.0322 0.0278 0.0297
22:01-23:00, Tue., 26 Dec. 0.0313 0.0272 0.0296
21:01-22:00, Tue., 26 Dec. 0.0317 0.0278 0.0294
20:01-21:00, Tue., 26 Dec. 0.0322 0.0274 0.0292
19:01-20:00, Tue., 26 Dec. 0.0305 0.0273 0.0291
18:01-19:00, Tue., 26 Dec. 0.0308 0.0269 0.0289
17:01-18:00, Tue., 26 Dec. 0.0308 0.0264 0.0288
16:01-17:00, Tue., 26 Dec. 0.0310 0.0270 0.0290
15:01-16:00, Tue., 26 Dec. 0.0311 0.0276 0.0291
14:01-15:00, Tue., 26 Dec. 0.0308 0.0273 0.0290
13:01-14:00, Tue., 26 Dec. 0.0314 0.0270 0.0292
12:01-13:00, Tue., 26 Dec. 0.0326 0.0280 0.0299
11:01-12:00, Tue., 26 Dec. 0.0314 0.0285 0.0300
10:01-11:00, Tue., 26 Dec. 0.0323 0.0277 0.0297
09:01-10:00, Tue., 26 Dec. 0.0315 0.0281 0.0298
08:01-09:00, Tue., 26 Dec. 0.0332 0.0293 0.0312
07:01-08:00, Tue., 26 Dec. 0.0316 0.0284 0.0300
06:01-07:00, Tue., 26 Dec. 0.0312 0.0269 0.0295
05:01-06:00, Tue., 26 Dec. 0.0309 0.0272 0.0296
04:01-05:00, Tue., 26 Dec. 0.0313 0.0272 0.0296
03:01-04:00, Tue., 26 Dec. 0.0321 0.0278 0.0295
02:01-03:00, Tue., 26 Dec. 0.0314 0.0276 0.0296
01:01-02:00, Tue., 26 Dec. 0.0313 0.0279 0.0297
00:01-01:00, Tue., 26 Dec. 0.0313 0.0276 0.0298
23:01-24:00, Mon., 25 Dec. 0.0315 0.0271 0.0297
22:01-23:00, Mon., 25 Dec. 0.0321 0.0284 0.0302
21:01-22:00, Mon., 25 Dec. 0.0323 0.0287 0.0301
20:01-21:00, Mon., 25 Dec. 0.0329 0.0283 0.0302
19:01-20:00, Mon., 25 Dec. 0.0324 0.0286 0.0304
18:01-19:00, Mon., 25 Dec. 0.0318 0.0279 0.0302
17:01-18:00, Mon., 25 Dec. 0.0325 0.0278 0.0301
16:01-17:00, Mon., 25 Dec. 0.0323 0.0277 0.0298
15:01-16:00, Mon., 25 Dec. 0.0315 0.0281 0.0297
14:01-15:00, Mon., 25 Dec. 0.0316 0.0277 0.0294
13:01-14:00, Mon., 25 Dec. 0.0313 0.0275 0.0293
12:01-13:00, Mon., 25 Dec. 0.0311 0.0281 0.0294
11:01-12:00, Mon., 25 Dec. 0.0312 0.0265 0.0294
10:01-11:00, Mon., 25 Dec. 0.0310 0.0271 0.0292
09:01-10:00, Mon., 25 Dec. 0.0313 0.0273 0.0295
08:01-09:00, Mon., 25 Dec. 0.0315 0.0283 0.0298
07:01-08:00, Mon., 25 Dec. 0.0315 0.0281 0.0299
06:01-07:00, Mon., 25 Dec. 0.0329 0.0273 0.0299
05:01-06:00, Mon., 25 Dec. 0.0348 0.0291 0.0321
04:01-05:00, Mon., 25 Dec. 0.0418 0.0324 0.0369
03:01-04:00, Mon., 25 Dec. 0.0435 0.0361 0.0399
02:01-03:00, Mon., 25 Dec. 0.0425 0.0360 0.0386
01:01-02:00, Mon., 25 Dec. 0.0403 0.0315 0.0353
00:01-01:00, Mon., 25 Dec. 0.0358 0.0297 0.0323