427 to 18 for Pidgeotto
769 to 19 for Abra
535 to 19 for Rattata
352 to 19 for Bulbasaur
120 to 19 for Caterpie
846 to 20 for Weedle
690 to 20 for Pidgey
525 to 20 for Nidoran-F
348 to 20 for Rattata
177 to 20 for Ekans
989 to 21 for Zubat (-9 to 19)
827 to 21 for Pidgey
640 to 21 for Nidoran-F
439 to 21 for Mankey
154 to 21 for Ekans
1075 to 22 for Zubat (-44 to 20)
903 to 22 for Onix
510 to 22 for Nidoran-M
318 to 22 for Nidoran-F
129 to 22 for Geodude
1139 to 23 for Geodude
901 to 23 for Machop
657 to 23 for Geodude
419 to 23 for Oddish
203 to 23 for Pidgey
50 to 23 for Oddish