PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/15-16:43:00
G02     203.0          30.9               12.7 +/-    2.19      21.8 +/-    2.19  0.060 / 0.110
G06     161.5          66.6               11.2 +/-    0.40      12.1 +/-    0.40  0.070 / 0.120
G12     305.2          12.3                9.3 +/-    1.73      24.8 +/-    1.73  0.110 / 0.140
G17     30.7           53.2                9.1 +/-    1.16      11.0 +/-    1.16  0.080 / 0.140
G19     359.1          66.1                9.2 +/-    0.67       9.9 +/-    0.67  0.070 / 0.090
G24     300.4          36.4                9.6 +/-    1.91      14.8 +/-    1.91  0.070 / 0.100
G28     96.7           37.8               10.7 +/-    1.08      16.1 +/-    1.08  0.040 / 0.040