“…A 5-point weighted moving average was used to smooth the data; it was observed that this weighted moving average did not add any noticeable delay in the signal (Linkens et al, 1997a(Linkens et al, , 1997b. A 5-point weighted moving average was used to smooth the data; it was observed that this weighted moving average did not add any noticeable delay in the signal (Linkens et al, 1997a(Linkens et al, , 1997b.…”