VER LISTADO BARCHART : INDICES VOLATILIDAD

VDAX y VSTOXX (entre otros...??), ptes de scrapear desde:
http://markets.businessinsider.com/index/historical-prices/vstoxx
http://markets.businessinsider.com/index/historical-prices/vdax_new/22.4.2004_22.5.2018

RATIOS PUT/CALL

CBOE Equity Volume and Put-Call Ratios - (Graf linea) ---- VER JSON: CBOE/EQUITY_PC
CBOE Equity Volume and Put-Call Ratios - Archive - (Graf linea) ---- VER JSON: CBOE/EQUITY_PC_ARCHIVE
CBOE Exchange-Traded-Product (ETP) Volume and Put-Call Ratios - (Graf linea) ---- VER JSON: CBOE/ETP_PC
CBOE Index Volume and Put-Call Ratios - (Graf linea) ---- VER JSON: CBOE/INDEX_PC
CBOE Index Volume and Put-Call Ratios - Archive - (Graf linea) ---- VER JSON: CBOE/INDEX_PC_ARCHIVE
CBOE S&P 500 Index Option Volume and Put-Call Ratios - (Graf linea) ---- VER JSON: CBOE/SPX_PC
CBOE Total Exchange Volume and Put-Call Ratios - (Graf linea) ---- VER JSON: CBOE/TOTAL_PC
CBOE Total Exchange Volume and Put-Call Ratios - Archive - (Graf linea) ---- VER JSON: CBOE/TOTAL_PC_ARCHIVE
CBOE Total, Index and Equity Put-Call Ratios - Archive - (Graf linea) ---- VER JSON: CBOE/COMBINED_PC_ARCHIVE
CBOE VIX Option Volume and Put-Call Ratios - (Graf linea) ---- VER JSON: CBOE/VIX_PC