``The Indian market is expected to open gap down following panic selling across US and Asian markets. The Sensex has supports at 16,630 and 16,210 and resistances at 17,080 and 17,230. The Nifty has supports at 4,950 and 4,930 and resistances at 5,100 and 5,140,`` said stock broker ICICI Securities while commenting on the market outlook.
Sensex has supports at 16,630 and 16,210: