>>> text = '''18:41:48
	Cisco	100/100	-39	-97
	Symbol	100/100	-27	-97
18:41:49
	Cisco	100/100	-37	-97
	Symbol	100/100	-27	-97
18:41:49
18:41:49	'''
>>> def f(text):
	lines=text.split('\n')
	is_res=True
	print '\tCisco\tSymbol'
	for line in lines:
		s=line.split()
		if len(s)==1:
			if not is_res:
				print '%s\t0\t0' % t
			t=s[0]
			is_res=False;
		else:
			if s[0]=='Cisco': is_res=True; print '%s\t%s' % (t, s[1]),
			elif s[0]=='Symbol': print s[1]
	if not is_res:
		print '%s\t0\t0' % t

		
>>> f(text)
	Cisco	Symbol
18:41:48	100/100 100/100
18:41:49	100/100 100/100
18:41:49	0	0
18:41:49	0	0
>>>