adding one more column in a loop

data1
1 0.01 3 5
1 0.6  2 1
 
data2
2 0.02 3 5
2 0.3 2 1
 
data3
3 0.01 3 5
3 0.01 2 1
 
output 
 
1 0.01 data1
2 0.02 data2
3 0.01 data3
3 0.01 data3

I want to print 1st, 2nd column and the filename when second column is less than 5.

I have tried

for i in data1 data2 data3
gawk '{if ($2 < 0.05) print $1, $2, ${i}}' > ${i}
done
 
cat data1 data2 data3 > output

but i dont think ${i} part works. any idea?

Try:

 
gawk '{if ($2 < 0.05) print $1, $2, FILENAME}' > ${i}

awesome thanks!

A slight variation to force the numeric conversion:

awk '$2+0<0.05{print $1,$2,FILENAME}' data*