"Blend change for the water event: how spawn rates were affected."

#PokemonGO: Hi, travelers. I studied data I could extract from a local scanner to extract what change the water event has brought to pokemon go.If you want more information about blend changes, you can find it on my biome analysis post: http://ift.tt/2naMQk8 the game launch last year, spawn rates migration have been recorded ("blend changes"). For example, on November 2nd, the famous "Drowzee Biome" had divided the Drowzee spawn rate by 6! To the extent that a new name had to be found. Magikarp rate in the water-2 also dropped by 3.5. Last blend change was around 5th of March, and the one before was for gen2 launch on 16th of February (gen2 was temporarily more frequent). I personally don't know all the blend changes. Always take this feature in consideration when analyzing biomes and older studies! For the record, it is also a blend change that occurs during event like Halloween event, Christmas Pikachu, Valentine event (but temporarily). Usually, at the end of such events, the spawns rates are reverted back but are a little bit different from before the event, resulting in a permanent blend change.So I compared 11.6M spawns from 11th of March and 2.1M from 26th of March and sorted pokemon by the ratio between their spawn rate before and after the event started. The biomes in here are approximately: Neutral Biome (30%), Ocean+/Ice Biome (25%), Bug Biome (15%), Water1-slowpoke Biome (10%), Mountain Biome (10%), Water2+ Biome (5%), Grass+ Biome (5%). Here are th biggest ratios:PokemonSpawn rate multiplierOmanyte39,97896662Tentacool36,60621962Mantine29,07723718Lapras17,32149654Magikarp13,7546655Seel13,32571692Qwilfish12,68401463Squirtle12,31004281Remoraid11,51080268Gyarados9,881323775Tentacruel7,514254253Golduck7,396209476Psyduck7,232952807Slowbro6,935532309Slowpoke6,630020169Chinchou5,112226923Azumarill3,961054346Blastoise3,898373756Quagsire3,872528861Marill3,813081525Wooper3,76031229Starmie3,554029522Wartotle3,532935726Kabutops3,514449316Poliwhirl3,50694804Octillery3,474488522Staryu3,351690321Poliwag3,334302464Lanturn3,303004187Goldeen3,300694227Omastar3,112797966Poliwrath2,838139322Totodile2,666686306As expected, all 34 first are water type. Now keep in mind that these data are biome dependant. For example, Totodile may be last in that list because he was already quite common before, so he got a less significative buff, for example. On the contrary Lapras was super rare, so that may explain the huge Lapras buff.Interesting to note, when I compare the difference (and not the ratio), I remark that the more common a pokemon was, the more its spawn rate was reduced, which is nice. That means they penalized more the commons than the rares to replace them by water type. Here are the pokemons that lost the more spawn rate percentage (they happen to also be the most common in my region)PokemonSpawn rate differenceSwinub-6,68%Pidgey-6,22%Natu-5,33%Rattata-5,11%Murkrow-4,57%Hoothoot-3,76%Sentret-3,72%Spearow-2,66%Spinarak-1,60%Ledyba-1,11%Eevee-1,08%Zubat-1,06%Aipom-1,00%Weedle-0,77%Venonat-0,65%My datasheet if you're interested: http://ift.tt/2nttadU event made the water pokemon more frequent, by cutting presence of the most commons. via /r/TheSilphRoad http://ift.tt/2n86M7h