ELWs in neutron star systems are always over-represented in ELW lists, mainly because Neutron stars are disproportionately targeted for visiting by explorers and long-range travellers. This makes finding a neutron-ELW seem more probable than it actually is. In other words, generating a neutron star ELW in the first place might be improbable, but finding one once it's generated is more probable.
EDAstro's neutron star database has just over 3 million entries. EDAstro's ELW database has just over 20,000 entries for neutron-star ELWs. So that's a ratio of only 1 in 150. Granted, the actual ratio of ELWs generated in neutron star systems is probably higher, as many of those neutron stars in the count probably weren't scanned thoroughly (i.e. they were simply traversed by someone in a hurry to get somewhere else, so they might have missed an ELW if one were present). So let's be generous and assume it's about a 1 in 100 (a 1% chance) of any given neutron star having an ELW. That's higher than the chance of finding an ELW in an M-class system, but much lower than the chance of finding one in an F or A class star system.
That ELW database has just under 400,000 entries, So neutron star ELWs comprise 5% of the total discovered ELW count. This means that we've found five times more neutron-ELWs than we would have found, if we were just visiting all star types randomly and there weren't gameplay reasons for actively seeking out and visiting neutron star systems. But without that incentive, there'd be an active dis-incentive to visit neutrons (because they're not fuel-scoopable), so regular travellers would filter them out. Plus, the low baseline probability would mean most explorers would filter them out, too.
I've never found one myself just by hopping around neutron stars at random. But then, I don't do neutron-hopping very much.
winner gets dead pod tissue
