PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/08-00:42:50
G02     223.3          68.0               13.5 +/-    0.65      14.4 +/-    0.65  0.070 / 0.100
G06     47.5           72.2               10.8 +/-    0.49      11.2 +/-    0.49  0.060 / 0.090
G12     319.4          39.6               10.0 +/-    1.12      14.6 +/-    1.12  0.050 / 0.060
G17     63.3           27.1                9.6 +/-    1.96      18.0 +/-    1.96  0.040 / 0.070
G19     46.7           44.7               12.0 +/-    1.20      16.3 +/-    1.20  0.220 / 0.380
G24     254.5          39.5               14.4 +/-    2.68      21.1 +/-    2.68  0.310 / 0.360
G28     125.9          12.2               14.4 +/-    1.83      38.3 +/-    1.83  0.040 / 0.070