Here is an example file 

Point name , X co ordinate , Y co ordinate , Z co ordinate


HU1,69.1,29114.5,2030.2
HU2,46.0,29238.1,2036.1
HU3,86.3,29240.7,2036.5
HU4,84.9,29324.0,2035.8
HU5,45.5,29325.6,2036.0
HU6,68.2,29429.7,2030.2