We present a systematic search for a pre dicted scalar saturation limit at a normalized root-mean-square (RMS) amplitude of 1/√2 ≈ 0.7071 in public LIGO and Virgo strain data spanning from the first gravitational-wave de tection GW150914 (2015) to the fourth observ ing run O4 (2023–2024). The analysis employs a peak-normalised RMS statistic over 1-second windows and accounts for the inflationary drift of the attractor predicted by the Universal Applicable Time (UAT) and Unified Princi ple of Causality (UPC) frameworks. A con trol test with synthetic white Gaussian noise yields 0.0% coincidence, ruling out a statisti cal origin. A total of 78 out of 219 analysed events exhibit a significant (> 50%) accumu lation at the epoch-corrected attractor value. The pattern of detections is detector-specific and time-dependent, demonstrating that the underlying field is directional. Triangulation of the maximum-sensitivity vectors from all positive detections yields a best-fit direction of RA = 124.78◦, Dec = 7.85◦ (Cáncer), with an RMS fit error of 0.4583. The marked drop in coherence during O4 is attributed to instru mental upgrades (squeezing, noise subtraction) and the unavailability of Virgo. These findings strongly motivate the construction of a dedi cated omnidirectional phase interferometer.