NMSE example 3.4
pf,          0
pd,     100000
test,         time,            max,            avg
if,         392756,              0,           -nan
id,    8.72338e+06,         61.959,        2.15222
of,         408438,              0,           -nan
od,    8.85836e+06,        61.8918,        14.6762
df,              0,              0
dd,        61.8918,          39478