Read a specific line from file

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Python

I have a file with many lines and 13 columns, I want to only use 8 lines of it. How do I read in the file and only use 8 lines of it. I have it that I can read in the file but its just taking in and print the whole thing which I dont need, is there a way to only read in whats needed or to assign certain lines to a variable?
I also want to create a histogram of the data in thos 8 lines but not including the first column, so I also need a way to exclude that?

What I have tried:

filename = "labdata.txt"


in_file = open(filename, 'r') 

data = in_file.readlines() 

for line in data:
	sdata = line.split(' ')  
	print(sdata) 

infile.close()  

Also tried this format

file_name = 'labdata.txt'

in_file = open(file_name, 'r')

header = in_file.readline()
print(header)

data = in_file.read()


print(data)