Quick takeaways:

Seed funding was up 35% in NYC in the month of September. The number of deals nearly tripled from August and the average round fell nearly 53%. Nationally seed funding was down 32% from August levels and the number of deals fell slightly.

For your tweeting convenience:                                                            
Average Angel/Seed round in NYC for September was $1.2M Tweet this     
$23.2M was invested across early stages rounds in NYC in September Tweet this
Average Angel/Seed round in the US for September was $1.3M   Tweet this
$143M was invested across early stages rounds in the US in September Tweet this
16.3% of early stage funding nationally went to startups in NYC in September Tweet this