Small period-5 oscillators

All known period-5 oscillators (not counting stator variants) that have one phase of less than 29 "on" cells.

Rank	Signature	apgcode	Name	Image	Minimum population	Rotor Size	Volatility
1	15-17-17-25-17	xp5_y2g0k413zwo0a02z32	Pseudo-barberpole		15	28	.82
2	16-24-16-24-24	xp5_idiidiz01w1	Octagon 2		16	32	.80
3	17-20-19-21-19	xp5_wftsw6246z32	Silver's p5		17	19	.63
4	18-22-18-22-22	xp5_3pmwmp3zx11	Fumarole		18	26	.72
5	20-20-22-22-28	xp5_y4ca23zwgg3226z6221	Pentoad		20	22	.64
6	20-21-22-26-21	xp5_2mq3sggozx346	Elkies' p5		20	16	.55
7	21-21-22-22-24	xp5_32aczxogf2c84c	Hooks		21	11	.39
8	23-24-29-27-33	xp5_0jrz3210o88czy46a8o	Pentoad 1H2		23	38	.79
9	26-26-30-30-40	xp5_y8ca23zy0gx3226zw8o1113z311	Pentoad with two hexominoes		26	38	.76
10	26-28-26-28-28	xp5_giligz36asgv04a4	Heart		26	18	.50
11	26-28-36-32-38	xp5_0jrz3210o88czy5e53zy533	Pentoad 2		26	54	.87
12	28-28-29-29-32	xp5_g0giegmp3z11074x6a8o	Pentant		28	10	.28
13	28-28-31-34-33	xp5_xc48oi13zy0ssz0n13z123	unnamed		28	45	.79
14	28-30-44-34-34	xp5_4j8qa606aq8j4zx26x62	Scot's p5		28	62	.93
15	28-32-32-48-32	xp5_03168gxg8a6z0gg8450dhz32y3346	Nivasch's pseudo-barberpole		28	52	.81
16	28-35-31-32-33	xp5_6a8w7zwor3sn52z04a511	5blink		28	42	.76

Signatures are the population counts for the oscillator, sequenced so that the lowest numbers appear to the left. The first signature number has three digits to facilitate sorting when a table includes larger oscillators. Signature numbers are used to break ties in oscillators of nearly the same size.