Measurement results by the hour (Chofu) 17 Mar., 2025 - 23 Mar., 2025

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., 23 Mar. 0.0295 0.0258 0.0273
22:01-23:00, Sun., 23 Mar. 0.0300 0.0253 0.0273
21:01-22:00, Sun., 23 Mar. 0.0293 0.0254 0.0271
20:01-21:00, Sun., 23 Mar. 0.0307 0.0245 0.0273
19:01-20:00, Sun., 23 Mar. 0.0299 0.0255 0.0275
18:01-19:00, Sun., 23 Mar. 0.0295 0.0256 0.0274
17:01-18:00, Sun., 23 Mar. 0.0295 0.0249 0.0277
16:01-17:00, Sun., 23 Mar. 0.0294 0.0248 0.0273
15:01-16:00, Sun., 23 Mar. 0.0296 0.0257 0.0274
14:01-15:00, Sun., 23 Mar. 0.0294 0.0253 0.0275
13:01-14:00, Sun., 23 Mar. 0.0296 0.0256 0.0275
12:01-13:00, Sun., 23 Mar. 0.0302 0.0252 0.0278
11:01-12:00, Sun., 23 Mar. 0.0294 0.0256 0.0274
10:01-11:00, Sun., 23 Mar. 0.0297 0.0260 0.0279
09:01-10:00, Sun., 23 Mar. 0.0305 0.0259 0.0281
08:01-09:00, Sun., 23 Mar. 0.0301 0.0257 0.0279
07:01-08:00, Sun., 23 Mar. 0.0296 0.0255 0.0275
06:01-07:00, Sun., 23 Mar. 0.0294 0.0252 0.0273
05:01-06:00, Sun., 23 Mar. 0.0287 0.0257 0.0270
04:01-05:00, Sun., 23 Mar. 0.0289 0.0252 0.0271
03:01-04:00, Sun., 23 Mar. 0.0288 0.0252 0.0271
02:01-03:00, Sun., 23 Mar. 0.0297 0.0245 0.0271
01:01-02:00, Sun., 23 Mar. 0.0283 0.0251 0.0270
00:01-01:00, Sun., 23 Mar. 0.0297 0.0250 0.0271
23:01-24:00, Sat., 22 Mar. 0.0288 0.0249 0.0273
22:01-23:00, Sat., 22 Mar. 0.0297 0.0251 0.0277
21:01-22:00, Sat., 22 Mar. 0.0297 0.0248 0.0277
20:01-21:00, Sat., 22 Mar. 0.0291 0.0261 0.0276
19:01-20:00, Sat., 22 Mar. 0.0298 0.0247 0.0274
18:01-19:00, Sat., 22 Mar. 0.0297 0.0242 0.0271
17:01-18:00, Sat., 22 Mar. 0.0299 0.0257 0.0277
16:01-17:00, Sat., 22 Mar. 0.0292 0.0260 0.0276
15:01-16:00, Sat., 22 Mar. 0.0292 0.0251 0.0272
14:01-15:00, Sat., 22 Mar. 0.0306 0.0256 0.0276
13:01-14:00, Sat., 22 Mar. 0.0304 0.0257 0.0276
12:01-13:00, Sat., 22 Mar. 0.0302 0.0259 0.0278
11:01-12:00, Sat., 22 Mar. 0.0294 0.0259 0.0277
10:01-11:00, Sat., 22 Mar. 0.0319 0.0251 0.0277
09:01-10:00, Sat., 22 Mar. 0.0297 0.0260 0.0276
08:01-09:00, Sat., 22 Mar. 0.0295 0.0245 0.0274
07:01-08:00, Sat., 22 Mar. 0.0299 0.0251 0.0276
06:01-07:00, Sat., 22 Mar. 0.0297 0.0252 0.0279
05:01-06:00, Sat., 22 Mar. 0.0300 0.0258 0.0279
04:01-05:00, Sat., 22 Mar. 0.0298 0.0261 0.0279
03:01-04:00, Sat., 22 Mar. 0.0295 0.0259 0.0280
02:01-03:00, Sat., 22 Mar. 0.0312 0.0256 0.0279
01:01-02:00, Sat., 22 Mar. 0.0292 0.0253 0.0276
00:01-01:00, Sat., 22 Mar. 0.0308 0.0256 0.0271
23:01-24:00, Fri., 21 Mar. 0.0298 0.0252 0.0274
22:01-23:00, Fri., 21 Mar. 0.0295 0.0252 0.0273
21:01-22:00, Fri., 21 Mar. 0.0293 0.0252 0.0273
20:01-21:00, Fri., 21 Mar. 0.0296 0.0252 0.0272
19:01-20:00, Fri., 21 Mar. 0.0299 0.0250 0.0271
18:01-19:00, Fri., 21 Mar. 0.0286 0.0250 0.0269
17:01-18:00, Fri., 21 Mar. 0.0304 0.0252 0.0274
16:01-17:00, Fri., 21 Mar. 0.0294 0.0255 0.0274
15:01-16:00, Fri., 21 Mar. 0.0300 0.0252 0.0274
14:01-15:00, Fri., 21 Mar. 0.0295 0.0253 0.0275
13:01-14:00, Fri., 21 Mar. 0.0297 0.0256 0.0273
12:01-13:00, Fri., 21 Mar. 0.0290 0.0259 0.0272
11:01-12:00, Fri., 21 Mar. 0.0291 0.0252 0.0274
10:01-11:00, Fri., 21 Mar. 0.0304 0.0249 0.0273
09:01-10:00, Fri., 21 Mar. 0.0297 0.0252 0.0275
08:01-09:00, Fri., 21 Mar. 0.0296 0.0259 0.0280
07:01-08:00, Fri., 21 Mar. 0.0323 0.0270 0.0287
06:01-07:00, Fri., 21 Mar. 0.0305 0.0265 0.0287
05:01-06:00, Fri., 21 Mar. 0.0301 0.0259 0.0284
04:01-05:00, Fri., 21 Mar. 0.0300 0.0249 0.0277
03:01-04:00, Fri., 21 Mar. 0.0295 0.0250 0.0273
02:01-03:00, Fri., 21 Mar. 0.0295 0.0256 0.0275
01:01-02:00, Fri., 21 Mar. 0.0309 0.0250 0.0282
00:01-01:00, Fri., 21 Mar. 0.0297 0.0259 0.0281
23:01-24:00, Thu., 20 Mar. 0.0308 0.0256 0.0273
22:01-23:00, Thu., 20 Mar. 0.0291 0.0233 0.0264
21:01-22:00, Thu., 20 Mar. 0.0289 0.0240 0.0263
20:01-21:00, Thu., 20 Mar. 0.0285 0.0238 0.0265
19:01-20:00, Thu., 20 Mar. 0.0280 0.0241 0.0264
18:01-19:00, Thu., 20 Mar. 0.0293 0.0245 0.0267
17:01-18:00, Thu., 20 Mar. 0.0292 0.0246 0.0264
16:01-17:00, Thu., 20 Mar. 0.0283 0.0251 0.0268
15:01-16:00, Thu., 20 Mar. 0.0284 0.0252 0.0268
14:01-15:00, Thu., 20 Mar. 0.0291 0.0249 0.0269
13:01-14:00, Thu., 20 Mar. 0.0289 0.0249 0.0268
12:01-13:00, Thu., 20 Mar. 0.0290 0.0251 0.0268
11:01-12:00, Thu., 20 Mar. 0.0297 0.0245 0.0268
10:01-11:00, Thu., 20 Mar. 0.0290 0.0245 0.0266
09:01-10:00, Thu., 20 Mar. 0.0284 0.0248 0.0267
08:01-09:00, Thu., 20 Mar. 0.0294 0.0249 0.0269
07:01-08:00, Thu., 20 Mar. 0.0284 0.0246 0.0268
06:01-07:00, Thu., 20 Mar. 0.0290 0.0249 0.0267
05:01-06:00, Thu., 20 Mar. 0.0304 0.0245 0.0266
04:01-05:00, Thu., 20 Mar. 0.0280 0.0242 0.0266
03:01-04:00, Thu., 20 Mar. 0.0294 0.0246 0.0267
02:01-03:00, Thu., 20 Mar. 0.0298 0.0244 0.0270
01:01-02:00, Thu., 20 Mar. 0.0295 0.0251 0.0269
00:01-01:00, Thu., 20 Mar. 0.0287 0.0245 0.0268
23:01-24:00, Wed., 19 Mar. 0.0290 0.0245 0.0264
22:01-23:00, Wed., 19 Mar. 0.0286 0.0246 0.0265
21:01-22:00, Wed., 19 Mar. 0.0281 0.0249 0.0264
20:01-21:00, Wed., 19 Mar. 0.0282 0.0244 0.0263
19:01-20:00, Wed., 19 Mar. 0.0283 0.0243 0.0264
18:01-19:00, Wed., 19 Mar. 0.0283 0.0245 0.0266
17:01-18:00, Wed., 19 Mar. 0.0289 0.0247 0.0267
16:01-17:00, Wed., 19 Mar. 0.0287 0.0242 0.0270
15:01-16:00, Wed., 19 Mar. 0.0290 0.0254 0.0272
14:01-15:00, Wed., 19 Mar. 0.0329 0.0259 0.0290
13:01-14:00, Wed., 19 Mar. 0.0398 0.0301 0.0343
12:01-13:00, Wed., 19 Mar. 0.0509 0.0393 0.0448
11:01-12:00, Wed., 19 Mar. 0.0501 0.0447 0.0472
10:01-11:00, Wed., 19 Mar. 0.0499 0.0444 0.0471
09:01-10:00, Wed., 19 Mar. 0.0550 0.0455 0.0501
08:01-09:00, Wed., 19 Mar. 0.0566 0.0505 0.0533
07:01-08:00, Wed., 19 Mar. 0.0562 0.0349 0.0489
06:01-07:00, Wed., 19 Mar. 0.0363 0.0294 0.0327
05:01-06:00, Wed., 19 Mar. 0.0447 0.0346 0.0401
04:01-05:00, Wed., 19 Mar. 0.0495 0.0394 0.0443
03:01-04:00, Wed., 19 Mar. 0.0499 0.0422 0.0458
02:01-03:00, Wed., 19 Mar. 0.0505 0.0447 0.0476
01:01-02:00, Wed., 19 Mar. 0.0486 0.0419 0.0456
00:01-01:00, Wed., 19 Mar. 0.0442 0.0251 0.0310
23:01-24:00, Tue., 18 Mar. 0.0290 0.0249 0.0268
22:01-23:00, Tue., 18 Mar. 0.0289 0.0244 0.0271
21:01-22:00, Tue., 18 Mar. 0.0283 0.0248 0.0268
20:01-21:00, Tue., 18 Mar. 0.0290 0.0245 0.0268
19:01-20:00, Tue., 18 Mar. 0.0297 0.0252 0.0271
18:01-19:00, Tue., 18 Mar. 0.0294 0.0253 0.0270
17:01-18:00, Tue., 18 Mar. 0.0297 0.0244 0.0271
16:01-17:00, Tue., 18 Mar. 0.0283 0.0247 0.0267
15:01-16:00, Tue., 18 Mar. 0.0288 0.0251 0.0270
14:01-15:00, Tue., 18 Mar. 0.0299 0.0250 0.0272
13:01-14:00, Tue., 18 Mar. 0.0290 0.0249 0.0271
12:01-13:00, Tue., 18 Mar. 0.0288 0.0249 0.0270
11:01-12:00, Tue., 18 Mar. 0.0295 0.0255 0.0271
10:01-11:00, Tue., 18 Mar. 0.0288 0.0250 0.0271
09:01-10:00, Tue., 18 Mar. 0.0291 0.0254 0.0274
08:01-09:00, Tue., 18 Mar. 0.0303 0.0254 0.0275
07:01-08:00, Tue., 18 Mar. 0.0307 0.0254 0.0277
06:01-07:00, Tue., 18 Mar. 0.0313 0.0262 0.0289
05:01-06:00, Tue., 18 Mar. 0.0387 0.0290 0.0332
04:01-05:00, Tue., 18 Mar. 0.0444 0.0364 0.0399
03:01-04:00, Tue., 18 Mar. 0.0380 0.0271 0.0299
02:01-03:00, Tue., 18 Mar. 0.0301 0.0262 0.0281
01:01-02:00, Tue., 18 Mar. 0.0293 0.0240 0.0272
00:01-01:00, Tue., 18 Mar. 0.0288 0.0249 0.0267
23:01-24:00, Mon., 17 Mar. 0.0284 0.0250 0.0268
22:01-23:00, Mon., 17 Mar. 0.0288 0.0253 0.0268
21:01-22:00, Mon., 17 Mar. 0.0294 0.0245 0.0266
20:01-21:00, Mon., 17 Mar. 0.0289 0.0249 0.0267
19:01-20:00, Mon., 17 Mar. 0.0291 0.0245 0.0267
18:01-19:00, Mon., 17 Mar. 0.0302 0.0239 0.0266
17:01-18:00, Mon., 17 Mar. 0.0287 0.0247 0.0267
16:01-17:00, Mon., 17 Mar. 0.0293 0.0245 0.0268
15:01-16:00, Mon., 17 Mar. 0.0294 0.0245 0.0268
14:01-15:00, Mon., 17 Mar. 0.0294 0.0251 0.0268
13:01-14:00, Mon., 17 Mar. 0.0300 0.0257 0.0278
12:01-13:00, Mon., 17 Mar. 0.0298 0.0252 0.0276
11:01-12:00, Mon., 17 Mar. 0.0297 0.0260 0.0275
10:01-11:00, Mon., 17 Mar. 0.0298 0.0257 0.0276
09:01-10:00, Mon., 17 Mar. 0.0297 0.0257 0.0274
08:01-09:00, Mon., 17 Mar. 0.0301 0.0253 0.0273
07:01-08:00, Mon., 17 Mar. 0.0294 0.0249 0.0272
06:01-07:00, Mon., 17 Mar. 0.0294 0.0249 0.0272
05:01-06:00, Mon., 17 Mar. 0.0294 0.0250 0.0274
04:01-05:00, Mon., 17 Mar. 0.0297 0.0255 0.0280
03:01-04:00, Mon., 17 Mar. 0.0334 0.0280 0.0303
02:01-03:00, Mon., 17 Mar. 0.0336 0.0287 0.0312
01:01-02:00, Mon., 17 Mar. 0.0329 0.0284 0.0306
00:01-01:00, Mon., 17 Mar. 0.0358 0.0294 0.0326