We analyze multiunit recordings from linear arrays of 16 electrodes spanning 3 or 9 mm in awake ferret V1, as in Fiser et al. Nature 431:573 (2004). Recordings were made at ages ranging from 29 to 168 days postnatal. Fiser et al. 2004 found that activity from P30 to P90 was dominated by similar activity patterns whether in dark or when stimulated by white noise or a natural movie. They showed that temporal correlations on a single electrode were long at early ages but became progressively shorter, while spatial correlations at a single time were short-ranged at early ages but became long-range at later ages. Correspondingly, activity patterns became dominated by bursts spanning all electrodes. We find the principal components of simultaneous activity across the electrodes. At later ages, most of the variance is in the first component, which is uniform across electrodes (each electrode deviates by the same number of standard deviations from its mean activity). This component’s autocorrelation shows some tendency to oscillate, with a bump of power in the range 10-17Hz. This temporal structure is quite similar for dark and movie stimuli. However, for noise stimuli, particularly at ages >= P120, very long-lasting oscillatory autocorrelation at 11-12 Hz is seen. This may represent alpha activity, which has been argued to represent an idle or disengaged state, suggesting the awake animal may disengage from the noise stimulus. More generally, this dominant first component seems likely to represent a global state rather than specific visual input. Subtracting off the principal component, the remaining activity shows correlations that are much more localized in space and time. Power in the remaining activity seems to fall off as a power of spatial frequency, suggesting that it might have no characteristic spatial scale.