NMSE example 3.8
pf,          0
pd,      50059
test,         time,            max,            avg
if,    1.08326e+06,              0,           -nan
id,     2.7183e+06,        63.0035,        3.70871
of,    1.41043e+06,              0,           -nan
od,    3.89093e+06,         63.584,        28.6137
df,              0,              0
dd,         63.584,          21680