  We investigate theoretically the relative time delay of photoelectrons
originating from the different subshells (2s and 2p) of neon. This quantity was
measured via attosecond streaking and studied theoretically by Schultze et al.
[Science 328, 1658 (2010)]. A substantial discrepancy was found between the
measured and the calculated values of the relative time delay. Several
theoretical studies has been put forward to resolve this issue, e.g. by
including correlation effects. In the present paper we explore the directional
dependence of the photoelectron emission and the consequences for the inferred
time delay. Our quantum mechanical calculations for an electron subject to
laser fields and an effective single particle potential show that the time
delay is indeed strongly angular dependent. Compared to strict forward emission
we find that accounting for emission within a cone of 45 deg aperture, leads to
a substantially increase of the relative time delay.
