\pgfplotstabletypeset[%every head row/.style={before row={\vspace{-0.2em} } },
fixed zerofill,
precision=4,
col sep=space,
dec sep align,
columns/0/.style ={column name=},
columns/1/.style ={column name=},
columns/2/.style ={column name=},
columns/3/.style ={column name=},
]{mydata.csv}