Tak se omlouvám, trošku jsem bojoval s převodem rrd z win na linux, ale pro to, co jsi posílal by měl stačit tento jednoduchý příkaz

Jenom si nejsem jistej, co jsou ty data ping_stddev... je to jitter?
rrdtool graph graf.png --height 200 --width 700 --slope-mode --start -86400 --end now \
DEF:rtt=ping-172.217.18.67.rrd:value:AVERAGE \
DEF:loss=ping_droprate-172.217.18.67.rrd:value:AVERAGE \
DEF:dev=ping_stddev-172.217.18.67.rrd:value:AVERAGE \
CDEF:lossp=loss,100,* \
CDEF:loss10=lossp,1,10,LIMIT,UN,UNKN,INF,IF \
CDEF:loss25=lossp,10,25,LIMIT,UN,UNKN,INF,IF \
CDEF:loss50=lossp,25,50,LIMIT,UN,UNKN,INF,IF \
CDEF:loss100=lossp,50,100,LIMIT,UN,UNKN,INF,IF \
COMMENT:"Packet loss\:" \
AREA:loss10#ffff80:"1-10%" \
AREA:loss25#ffc000:"10-25%" \
AREA:loss50#ff8000:"25-50%" \
AREA:loss100#ff0000:"50-100%\n" \
LINE1:dev#00FF00:"Jitter(ms)" \
GPRINT:dev:LAST:"Cur\:%8.2lf %s" \
GPRINT:dev:AVERAGE:"Avg\:%8.2lf %s" \
GPRINT:dev:MAX:"Max\:%8.2lf %s" \
GPRINT:dev:MIN:"Min\:%8.2lf %s\n" \
LINE1:rtt#0000FF:"Latency(ms)" \
GPRINT:rtt:LAST:"Cur\:%8.2lf %s" \
GPRINT:rtt:AVERAGE:"Avg\:%8.2lf %s" \
GPRINT:rtt:MAX:"Max\:%8.2lf %s" \
GPRINT:rtt:MIN:"Min\:%8.2lf %s\n"