The last reason is that there are companies such as Vaisala - Siemens (2011 - disconnected from Siemens, just Vaisala alone), that deal with measuring of the impact location, type, polarity and intensity of lightning, also own an extensive databases of past years, and certainly will not be a problem for them (if interested) to trace required data. By the way, their data are often very accurate, even though they indicated a measurement error as a circle diameter round 180 m, frequently are much more accurate, even less than 10m.
Ang huling dahilan ay Na may mga kumpanya tulad Microsoft Vaisala - Siemens (2011 - naalis sa pagkakakonekta mula sa Siemens, lamang Vaisala nag-iisa), Iyon deal sa pagsukat ng ang epekto ng lokasyon, uri, polarity at intensity ng kidlat, din sariling isang malawak na database ng mga nakaraang taon, at tiyak ay hindi isang problema para sa kanila (kung interesado) na kinakailangan na data ng trace.