Riven statistics for Sortie and Archon's Hunt rewards

904 rewards.

Official droptables on Warframe.com

Reward type	Count	Percentage
Anasa Ayatan Sculpture	249	27.5%
Riven Mod	256	28.3%
Endo	100	11.1%
Kuva	104	11.5%
Booster	103	11.4%
Exilus Warframe Adapter	25	2.8%
Forma	24	2.7%
Orokin Catalyst blueprint	23	2.5%
Orokin Reactor blueprint	18	2.0%
Legendary Core	2	0.2%

Statistics for Netracell mission rewards

148 rewards.

Official droptables on Warframe.com

Reward type	Count	Percentage
Crimson Archon Shard	29	19.6%
Melee Crescendo	9	6.1%
Amber Archon Shard	32	21.6%
Melee Duplicate	14	9.5%
Azure Archon Shard	33	22.3%
Melee Arcane Adapter	31	20.9%