I have some very good news for ppl with so many "0".
The issue is not the library (NewPing). The issue are the connections between the sensor and the board. I just found out that, if i hold tight the connections in the sensor with my hand, i get these results:
38 54
38 54 16
34 196
34 196 162
199 198
177 197
177 197 20
172 195
172 195 23
171 171
195 170
195 170 25
109 59
109 59 50
96 46
96 46 50
58 75
58 75 17
55 195
55 195 140
196 83
196 83 113
176 0
176 0 176
171 175
169 195
169 195 26
195 169
195 169 26
194 61
194 61 133
90 137
90 137 47
196 57
196 57 139
111 61
111 61 50
With same code as posted in post above this one, moving the sensor all around my room.
So, hope this helps!
BR