How to extract part of a line in python

The dataset:

  1      6.6156E-13        2       3.0535E-13        3       6.2224E-13
  4      3.0885E-13        5       1.1117E-10        6       3.8244E-11
  7      5.3916E-11        8       1.7591E-11        9       2.2733E-10

I want to extract just the coefficients and perform some operation .
The coefficients are 6.6156E-13, 3.0535E-13 etc.
How do i extract just the coefficients while preserving their id(id is the int value associated with the coefficients)?
I want to do this using python.I think i can use a dictionary for this and thus have key-value pairs.

Code:

text_file = open("SENS-BUCK.txt", "r") 
lines = text_file.readlines() 
a=[] 
for l in lines: 
    print (l) 

text_file.close()

How to extract part of a line in python