PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/29-19:58:10
G01     64.8           31.7               11.5 +/-    0.35      19.5 +/-    0.35  0.070 / 0.150
G07     139.4          20.5               15.6 +/-    0.62      33.9 +/-    0.62  0.070 / 0.130
G11     49.9           26.7                9.6 +/-    1.76      18.0 +/-    1.76  0.050 / 0.060
G13     267.5          37.4               16.0 +/-    1.61      24.2 +/-    1.61  0.040 / 0.060
G15     297.5          16.3               11.3 +/-    1.81      27.1 +/-    1.81  0.090 / 0.180
G17     242.8          73.6               16.2 +/-    0.46      16.9 +/-    0.46  0.070 / 0.190
G18     44.0           14.4                8.3 +/-    2.29      21.0 +/-    2.29  0.050 / 0.090
G19     227.3          46.7               17.4 +/-    0.69      22.8 +/-    0.69  0.050 / 0.100
G28     19.2           59.9               12.7 +/-    0.74      14.5 +/-    0.74  0.140 / 0.370
G30     139.9          55.1               14.0 +/-    1.02      16.7 +/-    1.02  0.120 / 0.320