Turnback Cave (Before first pillar) in Platinum

This location contains the following Pokemon:

Grass or cave interior

Pokemon	Morning		Day		Evening
Golbat	17-18	35%	17-18	35%	17-18	35%
Bronzor	15	20%	15	20%	15	20%
Chingling	16-18	10%	16-18	10%	16-18	10%
Duskull	18	5%	18	5%	18	5%
Gastly	15-17	40%	15-17	40%	15-17	30%
Dusclops					16	10%

Ruby in the GBA slot

Pokemon	Morning		Day		Evening
Solrock	18	8%	18	8%	18	8%
Chingling	16-18	6%	16-18	6%	16-18	6%
Duskull	18	1%	18	1%	18	1%

Sapphire in the GBA slot

Pokemon	Morning		Day		Evening
Lunatone	18	8%	18	8%	18	8%
Chingling	16-18	6%	16-18	6%	16-18	6%
Duskull	18	1%	18	1%	18	1%