It was checked, whether on the emergence of patterns can also contribute the underground electricity - geoelectricity (precise the word), and it was stated that for instance as a possible cause of the increased likelihood of some positive streamers, but statistically insignificant.
Ito ay naka-check, man sa paglitaw ng mga pattern ng ambag ng din ang underground koryente - geoelectricity (ang tumpak na salita), at ito ay nakasaad na halimbawa bilang isang posibleng Dahilan ng Dinagdagan posibilidad ng ilang mga positibong streamer, ngunit istatistika walang gaanong halaga.