# of time constants	decimal	1- decimal	percent	1- percent		bits	ADC steps	ADC resolution	ADC resolution %
0	0	1	0	100		1	2	0.5	50
1	0.632	0.368	63.2	36.8		2	4	0.25	25
2	0.864576	0.135424	86.4576	13.5424		3	8	0.125	12.5
3	0.950163968	0.049836032	95.0163968	4.9836032		4	16	0.0625	6.25
4	0.98166034	0.01833966	98.16603402	1.833965978		5	32	0.03125	3.125
5	0.993251005	0.006748995	99.32510052	0.67489948		6	64	0.015625	1.5625
6	0.99751637	0.00248363	99.75163699	0.248363009		7	128	0.0078125	0.78125
7	0.999086024	0.000913976	99.90860241	0.091397587		8	256	0.00390625	0.390625
8	0.999663657	0.000336343	99.96636569	0.033634312		9	512	0.001953125	0.1953125
9	0.999876226	0.000123774	99.98762257	0.012377427		10	1024	0.000976563	0.0976563
10	0.999954451	4.55489E-05	99.99544511	0.004554893		11	2048	0.000488281	0.0488281
11	0.999983238	1.6762E-05	99.9983238	0.001676201		12	4096	0.000244141	0.0244141
12	0.999993832	6.16842E-06	99.99938316	0.000616842		13	8192	0.00012207	0.012207
13	0.99999773	2.26998E-06	99.999773	0.000226998		14	16384	6.10352E-05	0.0061035
14	0.999999165	8.35352E-07	99.99991646	8.35352E-05		15	32768	3.05176E-05	0.0030518
15	0.999999693	3.07409E-07	99.99996926	3.07409E-05		16	65536	1.52588E-05	0.0015259
16	0.999999887	1.13127E-07	99.99998869	1.13127E-05		17	131072	7.62939E-06	0.0007629
17	0.999999958	4.16306E-08	99.99999584	4.16306E-06		18	262144	3.8147E-06	0.0003815