Measurement results of radiation doses in the air / Measurement results by the day (Koto)

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
Mon., 31 Dec.,2012 0.0462 0.0390 0.0427
Sun., 30 Dec.,2012 0.0535 0.0394 0.0448
Sat., 29 Dec.,2012 0.0501 0.0390 0.0427
Fri., 28 Dec.,2012 0.0498 0.0389 0.0435
Thu., 27 Dec.,2012 0.0465 0.0392 0.0424
Wed., 26 Dec.,2012 0.0467 0.0390 0.0426
Tue., 25 Dec.,2012 0.0468 0.0388 0.0425
Mon., 24 Dec.,2012 0.0467 0.0388 0.0426
Sun., 23 Dec.,2012 0.0470 0.0391 0.0425
Sat., 22 Dec.,2012 0.0556 0.0388 0.0445
Fri., 21 Dec.,2012 0.0459 0.0388 0.0426
Thu., 20 Dec.,2012 0.0474 0.0394 0.0427
Wed., 19 Dec.,2012 0.0467 0.0391 0.0427
Tue., 18 Dec.,2012 0.0469 0.0392 0.0429
Mon., 17 Dec.,2012 0.0535 0.0396 0.0433
Sun., 16 Dec.,2012 0.0531 0.0394 0.0435
Sat., 15 Dec.,2012 0.0483 0.0395 0.0435
Fri., 14 Dec.,2012 0.0470 0.0393 0.0428
Thu., 13 Dec.,2012 0.0478 0.0391 0.0427
Wed., 12 Dec.,2012 0.0470 0.0388 0.0428
Tue., 11 Dec.,2012 0.0476 0.0396 0.0431
Mon., 10 Dec.,2012 0.0472 0.0393 0.0431
Sun., 09 Dec.,2012 0.0470 0.0396 0.0430
Sat., 08 Dec.,2012 0.0473 0.0391 0.0428
Fri., 07 Dec.,2012 0.0462 0.0393 0.0426
Thu., 06 Dec.,2012 0.0473 0.0387 0.0427
Wed., 05 Dec.,2012 0.0461 0.0387 0.0425
Tue., 04 Dec.,2012 0.0486 0.0391 0.0428
Mon., 03 Dec.,2012 0.0479 0.0385 0.0428
Sun., 02 Dec.,2012 0.0506 0.0390 0.0434
Sat., 01 Dec.,2012 0.0494 0.0394 0.0429
Fri., 30 Nov.,2012 0.0468 0.0393 0.0428
Thu., 29 Nov.,2012 0.0558 0.0399 0.0438
Wed., 28 Nov.,2012 0.0482 0.0390 0.0430
Tue., 27 Nov.,2012 0.0471 0.0395 0.0427
Mon., 26 Nov.,2012 0.0626 0.0393 0.0455
Sun., 25 Nov.,2012 0.0465 0.0385 0.0426
Sat., 24 Nov.,2012 0.0477 0.0385 0.0428
Fri., 23 Nov.,2012 0.0542 0.0397 0.0444
Thu., 22 Nov.,2012 0.0502 0.0392 0.0433
Wed., 21 Nov.,2012 0.0469 0.0392 0.0428
Tue., 20 Nov.,2012 0.0477 0.0394 0.0428
Mon., 19 Nov.,2012 0.0464 0.0393 0.0427
Sun., 18 Nov.,2012 0.0472 0.0393 0.0429
Sat., 17 Nov.,2012 0.0598 0.0398 0.0457
Fri., 16 Nov.,2012 0.0468 0.0390 0.0427
Thu., 15 Nov.,2012 0.0480 0.0393 0.0430
Wed., 14 Nov.,2012 0.0469 0.0394 0.0428
Tue., 13 Nov.,2012 0.0469 0.0385 0.0427
Mon., 12 Nov.,2012 0.0486 0.0390 0.0428
Sun., 11 Nov.,2012 0.0494 0.0394 0.0438
Sat., 10 Nov.,2012 0.0473 0.0387 0.0427
Fri., 09 Nov.,2012 0.0466 0.0389 0.0428
Thu., 08 Nov.,2012 0.0470 0.0391 0.0429
Wed., 07 Nov.,2012 0.0466 0.0391 0.0428
Tue., 06 Nov.,2012 0.0547 0.0385 0.0457
Mon., 05 Nov.,2012 0.0486 0.0396 0.0434
Sun., 04 Nov.,2012 0.0474 0.0392 0.0430
Sat., 03 Nov.,2012 0.0466 0.0395 0.0430
Fri., 02 Nov.,2012 0.0464 0.0394 0.0429
Thu., 01 Nov.,2012 0.0474 0.0392 0.0431
Wed., 31 Oct.,2012 0.0470 0.0394 0.0431
Tue., 30 Oct.,2012 0.0478 0.0391 0.0430
Mon., 29 Oct.,2012 0.0583 0.0400 0.0444
Sun., 28 Oct.,2012 0.0554 0.0399 0.0449
Sat., 27 Oct.,2012 0.0471 0.0400 0.0430
Fri., 26 Oct.,2012 0.0466 0.0388 0.0430
Thu., 25 Oct.,2012 0.0476 0.0392 0.0430
Wed., 24 Oct.,2012 0.0462 0.0393 0.0427
Tue., 23 Oct.,2012 0.0550 0.0395 0.0443
Mon., 22 Oct.,2012 0.0475 0.0391 0.0431
Sun., 21 Oct.,2012 0.0471 0.0396 0.0432
Sat., 20 Oct.,2012 0.0469 0.0376 0.0428
Fri., 19 Oct.,2012 0.0562 0.0392 0.0445
Thu., 18 Oct.,2012 0.0527 0.0393 0.0444
Wed., 17 Oct.,2012 0.0520 0.0396 0.0443
Tue., 16 Oct.,2012 0.0469 0.0398 0.0432
Mon., 15 Oct.,2012 0.0475 0.0398 0.0433
Sun., 14 Oct.,2012 0.0492 0.0397 0.0438
Sat., 13 Oct.,2012 0.0475 0.0400 0.0433
Fri., 12 Oct.,2012 0.0469 0.0388 0.0431
Thu., 11 Oct.,2012 0.0473 0.0393 0.0429
Wed., 10 Oct.,2012 0.0475 0.0385 0.0431
Tue., 09 Oct.,2012 0.0464 0.0396 0.0429
Mon., 08 Oct.,2012 0.0978 0.0395 0.0430
Sun., 07 Oct.,2012 0.0526 0.0402 0.0446
Sat., 06 Oct.,2012 0.0460 0.0390 0.0428
Fri., 05 Oct.,2012 0.0466 0.0384 0.0427
Thu., 04 Oct.,2012 0.0596 0.0389 0.0440
Wed., 03 Oct.,2012 0.0493 0.0393 0.0440
Tue., 02 Oct.,2012 0.0481 0.0398 0.0432
Mon., 01 Oct.,2012 0.0469 0.0399 0.0433
Sun., 30 Sep.,2012 0.0494 0.0399 0.0438
Sat., 29 Sep.,2012 0.0475 0.0400 0.0433
Fri., 28 Sep.,2012 0.0474 0.0397 0.0433
Thu., 27 Sep.,2012 0.0482 0.0391 0.0431
Wed., 26 Sep.,2012 0.0476 0.0391 0.0431
Tue., 25 Sep.,2012 0.0566 0.0398 0.0440
Mon., 24 Sep.,2012 0.0568 0.0396 0.0436
Sun., 23 Sep.,2012 0.0585 0.0405 0.0471
Sat., 22 Sep.,2012 0.0541 0.0399 0.0437
Fri., 21 Sep.,2012 0.0473 0.0392 0.0436
Thu., 20 Sep.,2012 0.0478 0.0394 0.0431
Wed., 19 Sep.,2012 0.0473 0.0392 0.0428
Tue., 18 Sep.,2012 0.0476 0.0399 0.0435
Mon., 17 Sep.,2012 0.0478 0.0406 0.0437
Sun., 16 Sep.,2012 0.0472 0.0400 0.0439
Sat., 15 Sep.,2012 0.0477 0.0397 0.0438
Fri., 14 Sep.,2012 0.0484 0.0404 0.0440
Thu., 13 Sep.,2012 0.0475 0.0402 0.0440
Wed., 12 Sep.,2012 0.0485 0.0402 0.0441
Tue., 11 Sep.,2012 0.0479 0.0396 0.0437
Mon., 10 Sep.,2012 0.0484 0.0398 0.0436
Sun., 09 Sep.,2012 0.0469 0.0398 0.0436
Sat., 08 Sep.,2012 0.0477 0.0401 0.0436
Fri., 07 Sep.,2012 0.0479 0.0391 0.0437
Thu., 06 Sep.,2012 0.0527 0.0402 0.0448
Wed., 05 Sep.,2012 0.0479 0.0392 0.0436
Tue., 04 Sep.,2012 0.0485 0.0397 0.0434
Mon., 03 Sep.,2012 0.0479 0.0403 0.0436
Sun., 02 Sep.,2012 0.0476 0.0402 0.0437
Sat., 01 Sep.,2012 0.0483 0.0398 0.0441
Fri., 31 Aug.,2012 0.0491 0.0405 0.0441
Thu., 30 Aug.,2012 0.0484 0.0400 0.0443
Wed., 29 Aug.,2012 0.0481 0.0407 0.0442
Tue., 28 Aug.,2012 0.0477 0.0388 0.0442
Mon., 27 Aug.,2012 0.0488 0.0404 0.0442
Sun., 26 Aug.,2012 0.0496 0.0408 0.0442
Sat., 25 Aug.,2012 0.0478 0.0400 0.0441
Fri., 24 Aug.,2012 0.0484 0.0403 0.0441
Thu., 23 Aug.,2012 0.0487 0.0408 0.0441
Wed., 22 Aug.,2012 0.0484 0.0404 0.0441
Tue., 21 Aug.,2012 0.0483 0.0400 0.0440
Mon., 20 Aug.,2012 0.0478 0.0403 0.0439
Sun., 19 Aug.,2012 0.0474 0.0404 0.0439
Sat., 18 Aug.,2012 0.0499 0.0403 0.0442
Fri., 17 Aug.,2012 0.0493 0.0398 0.0440
Thu., 16 Aug.,2012 0.0484 0.0397 0.0438
Wed., 15 Aug.,2012 0.0482 0.0403 0.0439
Tue., 14 Aug.,2012 0.0492 0.0405 0.0443
Mon., 13 Aug.,2012 0.0474 0.0406 0.0439
Sun., 12 Aug.,2012 0.0482 0.0402 0.0439
Sat., 11 Aug.,2012 0.0484 0.0402 0.0438
Fri., 10 Aug.,2012 0.0484 0.0400 0.0438
Thu., 09 Aug.,2012 0.0476 0.0401 0.0437
Wed., 08 Aug.,2012 0.0483 0.0399 0.0437
Tue., 07 Aug.,2012 0.0487 0.0396 0.0437
Mon., 06 Aug.,2012 0.0492 0.0406 0.0443
Sun., 05 Aug.,2012 0.0489 0.0413 0.0444
Sat., 04 Aug.,2012 0.0486 0.0408 0.0444
Fri., 03 Aug.,2012 0.0491 0.0407 0.0442
Thu., 02 Aug.,2012 0.0481 0.0405 0.0442
Wed., 01 Aug.,2012 0.0488 0.0400 0.0441
Tue., 31 Jul.,2012 0.0487 0.0407 0.0442
Mon., 30 Jul.,2012 0.0481 0.0400 0.0441
Sun., 29 Jul.,2012 0.0490 0.0399 0.0443
Sat., 28 Jul.,2012 0.0481 0.0402 0.0442
Fri., 27 Jul.,2012 0.0484 0.0404 0.0444
Thu., 26 Jul.,2012 0.0482 0.0405 0.0444
Wed., 25 Jul.,2012 0.0476 0.0409 0.0441
Tue., 24 Jul.,2012 0.0473 0.0400 0.0438
Mon., 23 Jul.,2012 0.0480 0.0402 0.0437
Sun., 22 Jul.,2012 0.0474 0.0404 0.0437
Sat., 21 Jul.,2012 0.0504 0.0404 0.0441
Fri., 20 Jul.,2012 0.0504 0.0408 0.0446
Thu., 19 Jul.,2012 0.0481 0.0407 0.0443
Wed., 18 Jul.,2012 0.0484 0.0405 0.0442
Tue., 17 Jul.,2012 0.0491 0.0399 0.0440
Mon., 16 Jul.,2012 0.0481 0.0404 0.0439
Sun., 15 Jul.,2012 0.0479 0.0402 0.0438
Sat., 14 Jul.,2012 0.0641 0.0402 0.0462
Fri., 13 Jul.,2012 0.0628 0.0402 0.0450
Thu., 12 Jul.,2012 0.0508 0.0405 0.0445
Wed., 11 Jul.,2012 0.0481 0.0399 0.0440
Tue., 10 Jul.,2012 0.0484 0.0398 0.0438
Mon., 09 Jul.,2012 0.0486 0.0406 0.0437
Sun., 08 Jul.,2012 0.0527 0.0396 0.0449
Sat., 07 Jul.,2012 0.0578 0.0401 0.0465
Fri., 06 Jul.,2012 0.0562 0.0409 0.0452
Thu., 05 Jul.,2012 0.0474 0.0394 0.0441
Wed., 04 Jul.,2012 0.0480 0.0398 0.0441
Tue., 03 Jul.,2012 0.0550 0.0402 0.0456
Mon., 02 Jul.,2012 0.0489 0.0400 0.0443
Sun., 01 Jul.,2012 0.0529 0.0407 0.0452
Sat., 30 Jun.,2012 0.0484 0.0403 0.0443
Fri., 29 Jun.,2012 0.0483 0.0394 0.0440
Thu., 28 Jun.,2012 0.0483 0.0408 0.0440
Wed., 27 Jun.,2012 0.0497 0.0403 0.0440
Tue., 26 Jun.,2012 0.0479 0.0396 0.0437
Mon., 25 Jun.,2012 0.0482 0.0400 0.0438
Sun., 24 Jun.,2012 0.0479 0.0398 0.0438
Sat., 23 Jun.,2012 0.0486 0.0390 0.0438
Fri., 22 Jun.,2012 0.0524 0.0404 0.0448
Thu., 21 Jun.,2012 0.0488 0.0406 0.0440
Wed., 20 Jun.,2012 0.0520 0.0405 0.0444
Tue., 19 Jun.,2012 0.0531 0.0403 0.0442
Mon., 18 Jun.,2012 0.0483 0.0403 0.0439
Sun., 17 Jun.,2012 0.0489 0.0404 0.0441
Sat., 16 Jun.,2012 0.0502 0.0400 0.0442
Fri., 15 Jun.,2012 0.0499 0.0394 0.0439
Thu., 14 Jun.,2012 0.0483 0.0402 0.0438
Wed., 13 Jun.,2012 0.0482 0.0403 0.0438
Tue., 12 Jun.,2012 0.0520 0.0406 0.0455
Mon., 11 Jun.,2012 0.0483 0.0395 0.0440
Sun., 10 Jun.,2012 0.0483 0.0403 0.0440
Sat., 09 Jun.,2012 0.0553 0.0415 0.0466
Fri., 08 Jun.,2012 0.0518 0.0411 0.0448
Thu., 07 Jun.,2012 0.0483 0.0409 0.0444
Wed., 06 Jun.,2012 0.0491 0.0412 0.0449
Tue., 05 Jun.,2012 0.0488 0.0411 0.0445
Mon., 04 Jun.,2012 0.0484 0.0405 0.0446
Sun., 03 Jun.,2012 0.0502 0.0408 0.0446
Sat., 02 Jun.,2012 0.0487 0.0405 0.0449
Fri., 01 Jun.,2012 0.0487 0.0410 0.0447
Thu., 31 May.,2012 0.0486 0.0411 0.0446
Wed., 30 May.,2012 0.0502 0.0409 0.0447
Tue., 29 May.,2012 0.0519 0.0407 0.0447
Mon., 28 May.,2012 0.0497 0.0409 0.0447
Sun., 27 May.,2012 0.0485 0.0405 0.0444
Sat., 26 May.,2012 0.0492 0.0407 0.0446
Fri., 25 May.,2012 0.0522 0.0407 0.0451
Thu., 24 May.,2012 0.0491 0.0402 0.0442
Wed., 23 May.,2012 0.0478 0.0405 0.0440
Tue., 22 May.,2012 0.0547 0.0412 0.0467
Mon., 21 May.,2012 0.0492 0.0407 0.0446
Sun., 20 May.,2012 0.0492 0.0408 0.0446
Sat., 19 May.,2012 0.0489 0.0409 0.0446
Fri., 18 May.,2012 0.0541 0.0407 0.0453
Thu., 17 May.,2012 0.0486 0.0408 0.0445
Wed., 16 May.,2012 0.0482 0.0404 0.0442
Tue., 15 May.,2012 0.0519 0.0406 0.0458
Mon., 14 May.,2012 0.0484 0.0410 0.0445
Sun., 13 May.,2012 0.0493 0.0396 0.0445
Sat., 12 May.,2012 0.0482 0.0410 0.0443
Fri., 11 May.,2012 0.0480 0.0404 0.0442
Thu., 10 May.,2012 0.0571 0.0402 0.0455
Wed., 09 May.,2012 0.0624 0.0410 0.0459
Tue., 08 May.,2012 0.0492 0.0414 0.0446
Mon., 07 May.,2012 0.0487 0.0407 0.0446
Sun., 06 May.,2012 0.0488 0.0404 0.0447
Sat., 05 May.,2012 0.0500 0.0406 0.0444
Fri., 04 May.,2012 0.0612 0.0402 0.0459
Thu., 03 May.,2012 0.0601 0.0411 0.0496
Wed., 02 May.,2012 0.0511 0.0395 0.0454
Tue., 01 May.,2012 0.0485 0.0402 0.0442
Mon., 30 Apr.,2012 0.0483 0.0404 0.0443
Sun., 29 Apr.,2012 0.0486 0.0408 0.0444
Sat., 28 Apr.,2012 0.0485 0.0408 0.0444
Fri., 27 Apr.,2012 0.0563 0.0409 0.0469
Thu., 26 Apr.,2012 0.0510 0.0400 0.0450
Wed., 25 Apr.,2012 0.0493 0.0406 0.0444
Tue., 24 Apr.,2012 0.0509 0.0410 0.0446
Mon., 23 Apr.,2012 0.0503 0.0407 0.0450
Sun., 22 Apr.,2012 0.0502 0.0408 0.0451
Sat., 21 Apr.,2012 0.0485 0.0410 0.0443
Fri., 20 Apr.,2012 0.0487 0.0407 0.0444
Thu., 19 Apr.,2012 0.0490 0.0409 0.0444
Wed., 18 Apr.,2012 0.0483 0.0404 0.0444
Tue., 17 Apr.,2012 0.0518 0.0408 0.0449
Mon., 16 Apr.,2012 0.0491 0.0409 0.0445
Sun., 15 Apr.,2012 0.0484 0.0414 0.0445
Sat., 14 Apr.,2012 0.0574 0.0400 0.0495
Fri., 13 Apr.,2012 0.0524 0.0416 0.0454
Thu., 12 Apr.,2012 0.0494 0.0410 0.0447
Wed., 11 Apr.,2012 0.0520 0.0414 0.0463

Past data