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Table 4 Comparison of RQA measures for data set CNST_e, as raw data (column 1), with nonlinear noise reduction (column 2) and with noise reduction using the regional filter method (column 3; Beavan et al. 2004)

From: Nonlinear dynamical analysis of GNSS data: quantification, precursors and synchronisation

Data set 1. CNST_e
Raw one-day data
2. CNST_e
Nonlinear noise removal
3. CNST_e
Regional filter
% change of # 2 with respect to 1 % change of # 3 with respect to 1
%REC 38.44 38.44 36.48 0 5.10
%DET 97.48 97.48 97.31 0 0.17
LMAX 2687 2688 2676 − 0.04 0.41
ENT 4.28 4.28 3.8 0 11.21
TREND − 7.05 − 7.02 − 10.02 − 0.43 − 42.13
%LAM 98.21 98.21 97.99 0 0.22
VMAX 411 411 446 0 − 8.52
TTIME 40.1 40.1 31.85 0 20.57