anchor.diff:      + occurredUntil: `2017-01-05T12:21:15Z` (end time range, optional)
           - time range period for lightning observation.
   
  -
  -    + provider: `ENGLN,NOWCAST' (string, required)
  +    + provider: `ENGLN,NOWCAST` (string, required)
           - lightning providers.
   
  +    + startPosition: `60000` (not negative integer, optional)
  +        - Is used for pagination. It is recommnded to set it as multiple of 30 000.
   
   
   + Response 200 (application/json)
  
positive.code:     + Headers
  
              Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiYWRtaW4iOnRydWV9.EkN-DOsnsuRjRO6BxXemmJDm3HbxrbRzXglbN2S4sOkopdU4IsDxTI8jO19W_A4K8ZPJijNLis4EZsHeY559a4DFOd50_OqgHGuERTqYZyuhtF39yxJPAjUESwxk2J5k_4zM3O-vtd1Ghyo4IbqKKSy6J9mTniYJPenn5-HIirE
  
      + Body
          {
  
negative.code: https://lightning.weather.mg/weighted?&temporalResolution=PT15M&spatialResolution=0.5&locationWithin=[-10,80],[10,5]&occurredFrom=2017-01-05T12:19:14Z
  https://lightning.weather.mg/weighted?&temporalResolution=PT15M&spatialResolution=0.5&locationWithin=[-10,80],[10,5]
  
  ##### Limitation
  Since AWS API Gatewey has maximum response time 30 seconds and a Lambda instance can allocate no more than 1.5Gb RAM it is impossible to process a really huge amount of lightning events. Therefore at most 200 000 first lightnings are being taken into account.
  
  ### Observed weighted lightning for a given boundingBox, time period, weighted by time span and spatial resolution
  
  This resource provides data from existing lightning observation providers.
  