YangZhangVolatility nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan 49.73055495862566 50.336835888606245 50.295708637493 50.178204290204896 50.13500061838614 50.082231586072865 49.84286975984059 49.50493858970139 49.322645888630454 49.19097727711584 48.42240617471159 46.77302381525692 44.85314201755732 43.54507114802991 42.97228741301452 42.97734042325523 43.20631978759911 43.20662413494581 42.58930617540846 40.89412331534842 38.83851112615815 37.720252605227124 38.30287560847133 39.62204658168134 40.714023436052216 41.20636344894946 41.37405384917847 41.32956401867747 41.22692028198685 41.20059009224168 41.56918441089111 42.41850760081713 43.146978957463645 43.29018011572681 43.07528004927498 42.95385328982968 42.96029639310158 42.738983498649226 42.33165549106008 42.05720013603713 41.91871616490789 41.51674337539882 40.39240367038708 38.863351643614735 37.73746009779785 37.27247577288424 37.13827969402811 37.3134235783825 37.40917901771012 37.19745995333772 36.299095777382355 34.776647740826775 33.385150451849164 33.2477055348835 34.33953885180244 35.62112776659788 36.41178691335502 36.74335954813314 36.783384570849684 36.618381911488115