-v CVC in EUR
-t CVC sell
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DEF:sell=/var/www/localhost/rrd/crypto-CVC.rrd:sell:AVERAGE
LINE:0.1402#ff0000:2021-01-14
COMMENT:\n
AREA:sell#CC9A5760:sell
COMMENT:\n
COMMENT:        max.          avg.         min.          cur.\n
GPRINT:sell:MAX:%6.4lf %sEUR
GPRINT:sell:AVERAGE:%6.4lf %sEUR
GPRINT:sell:MIN:%6.4lf %sEUR
GPRINT:sell:LAST:%6.4lf %sEUR\n