Asakusa path near Sensou Temple (East Tokyo) Sample75

2017/05/26/ 22：40ー23：35

GPS 35.714872,139.794813

Weather: Sunny day but it rained 9 and a half hours ago.
Sample: （wet）(mud)

Sample75

Scintillation Counter Hitachi Aloka TSC172B（90sec average value）

Major Factor of the hotspot　
There is a dent along with the building. The fallout was brought to the dent when it rained. 

Note:
none

The range of the hotspot: 90cm x 35cm

Sampling range of the hotspot: 26cm x 28cm
Depth of the hotspot: more than 1~2ｃｍ

Sampling Depth: 1~2ｃｍ

Measurement Data
Measurement Date: 2017/05/28

Cs134   409Bq/Kg  ±41Bq/Kg

Cs137 2,641Bq/Kg  ±265Bq/Kg

All Cs   3,050Bq/Kg　
Sample Weights　152.0ｇ
Measurement Time:　600sec

Gamma Spectroscopy (NaI) Captus 3000B

Readings above the hotspot　

1m　0.07μSv/h、50㎝　0.07μSv/h、5㎝　0.14μSv/h

Readings  2meters away from the center of the hotspot

1ⅿ　0.07μSv/h、50ｃｍ　0.08μSv/h、5ｃｍ　0.08μSv/h

Sampling Spot

Sampling Spot

Readings  2meters away from the center of the hotspot 1m

Readings  2meters away from the center of the hotspot 50cm

Readings  2meters away from the center of the hotspot  5cm

 Readings above the hotspot 1m

 Readings above the hotspot 50cm

 Readings above the hotspot 5cm

Depth of the Sampling Spot

Depth of the Sampling Spot

After making a sample of the hotspot

Measurement Data