BEGIN {
  FS = "\t"
  ORS = ""
}

NR == 1 {
  cols = ""
  for (k=1; k <= NF; ++k){
    cols = cols "c"
  }
  print "\\begin{tabular}{" cols "}\n"
  print "\\toprule\n"
}

NR ==2 {
  print "\\midrule\n"
}

{
  for (i=1; i <= NF; ++i){
    if (NR ==1){
      print "\\bfseries "
    }

    x = sprintf("%.2g", $i)
    if ($i != "" && (x != "0" || $i == 0)) {
      printf "%.2f", $i
    } else {
      print $i
    }

    if (i < NF) {
      print " & "
    } else {
      print "\\\\\n"
    }
  }
}

END {
  print "\\bottomrule\n\\end{tabular}\n"
}