PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/18-14:43:10
G02     231.9          68.5                8.0 +/-    0.66       8.5 +/-    0.66  0.090 / 0.070
G05     175.2          11.4                0.1 +/-   21.72       0.2 +/-   21.72  0.060 / 0.090
G06     41.8           60.7                7.3 +/-    0.53       8.2 +/-    0.53  0.030 / 0.050
G12     322.2          51.8                7.3 +/-    0.65       9.0 +/-    0.65  0.030 / 0.040
G17     68.9           23.0                6.5 +/-    0.91      13.2 +/-    0.91  0.140 / 0.420
G19     49.4           44.5                7.4 +/-    1.29      10.1 +/-    1.29  0.120 / 0.410
G24     245.8          36.5                8.7 +/-    1.12      13.4 +/-    1.12  0.380 / 0.460
G25     315.9          11.4              -10.8 +/-   26.58     -29.3 +/-   26.58  0.320 / 0.510