This is the text pasted from Excel normally, i.e. just Cmd-V.

distance		angle	separation		
10	feet	0.5	0.087266186	1.05	inches
300	feet	0.5	2.617985571		feet
5280	feet	0.5	46.07654605		feet
240000	miles	0.5	2094.388457		miles

This is the text pasted from Excel using "Paste as table".

| distance	|	| angle	| separation	|	|  | | | | | | | | | | | | | | | | | | | |
10	| feet	| 0.5	| 0.087266186	| 1.05	| inches | | | | | | | | | | | | | | | | | | | |
300	| feet	| 0.5	| 2.617985571	|	| feet | | | | | | | | | | | | | | | | | | | |
5280	| feet	| 0.5	| 46.07654605	|	| feet | | | | | | | | | | | | | | | | | | | |
240000	| miles	| 0.5	| 2094.388457	|	| miles   | | | | | | | | | | | | | | | | | | | |
| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| ------	| miles  


This is the text pasted from Numbers normally, i.e. Cmd-V.

distance		angle	separation		
10	feet	0.5	0.087266186	1.05	inches
300	feet	0.5	2.617985571		feet
5280	feet	0.5	46.076546047		feet
240000	miles	0.5	2094.388456677		miles

This is the text pasted from Numbers using "Paste as table".

| distance	|	| angle	| separation	|	|	|  
| --------	| -----	| -----	| --------------	| ----	| ------	|  
| 10	| feet	| 0.5	| 0.087266186	| 1.05	| inches	|  
| 300	| feet	| 0.5	| 2.617985571	|	| feet	|  
| 5280	| feet	| 0.5	| 46.076546047	|	| feet	|  
| 240000	| miles	| 0.5	| 2094.388456677	|	| miles	|  


This is the text pasted from Excel into BBEdit, and from there into here normally, i.e. using Cmd-V.

distance		angle	separation		
10	feet	0.5	0.087266186	1.05	inches
300	feet	0.5	2.617985571		feet
5280	feet	0.5	46.07654605		feet
240000	miles	0.5	2094.388457		miles

This is the text pasted from Excel into BBedit, and then from BBEdit to here using "Paste as table".

| distance	|	| angle	| separation	|	|	|  
| --------	| -----	| -----	| -----------	| ----	| ------	|  
| 10	| feet	| 0.5	| 0.087266186	| 1.05	| inches	|  
| 300	| feet	| 0.5	| 2.617985571	|	| feet	|  
| 5280	| feet	| 0.5	| 46.07654605	|	| feet	|  
| 240000	| miles	| 0.5	| 2094.388457	|	| miles	|