[pfkxmlzb] Twenty common logarithms

Same as Ten common logarithms, but with subdivision into twenty instead of 10.

0 =	log	1
		1.05
0.05 =	log	1.12
		1.2
0.1 =	log	1.25
		1.35
0.15 =	log	1.4
		1.5
0.2 =	log	1.6
		1.7
0.25 =	log	1.75
		1.9
0.3 =	log	2
		2.1
0.35 =	log	2.2
		2.35
0.4 =	log	2.5
		2.7
0.45 =	log	2.8
		3
0.5 =	log	3.15
		3.3
0.55 =	log	3.5
		3.8
0.6 =	log	4
		4.25
0.65 =	log	4.5
		4.7
0.7 =	log	5
		5.3
0.75 =	log	5.6
		6
0.8 =	log	6.3
		6.7
0.85 =	log	7
		7.5
0.9 =	log	8
		8.5
0.95 =	log	8.9
		9.5
1 =	log	10