NMSE example 3.4
pf,          0
pd,     100000
test,         time,            max,            avg
if,         426580,              0,           -nan
id,     8.6767e+06,         61.959,        2.15222
of,         445430,              0,           -nan
od,    8.83997e+06,        61.8918,        14.6762
df,              0,              0
dd,        61.8918,          39478