PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/12-08:27:50
G01     42.8           18.7                2.8 +/-    1.25       6.3 +/-    1.25  0.060 / 0.100
G06     175.6          35.5                6.6 +/-    1.23      10.3 +/-    1.23  0.050 / 0.120
G13     239.9          24.3                5.3 +/-    1.60      10.5 +/-    1.60  0.140 / 0.290
G15     276.5          12.8                3.8 +/-    1.10      10.1 +/-    1.10  0.130 / 0.330
G17     1.9            71.4                6.1 +/-    0.83       6.4 +/-    0.83  0.090 / 0.210
G19     263.5          64.6                5.7 +/-    0.95       6.3 +/-    0.95  0.080 / 0.210
G24     316.2          20.2                4.1 +/-    2.47       9.1 +/-    2.47  0.060 / 0.090
G28     65.5           49.6                4.5 +/-    0.43       5.7 +/-    0.43  0.070 / 0.100
G30     154.2          32.4                7.5 +/-    0.67      12.6 +/-    0.67  0.080 / 0.130