PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-17:12:30
G02     205.5          39.3               11.7 +/-    0.67      17.3 +/-    0.67  0.050 / 0.140
G06     146.8          74.5               12.2 +/-    0.92      12.7 +/-    0.92  0.060 / 0.130
G12     309.5          18.3               10.2 +/-    1.66      23.3 +/-    1.66  0.060 / 0.090
G17     38.6           47.2                9.4 +/-    1.46      12.3 +/-    1.46  0.050 / 0.090
G19     14.5           61.1               10.9 +/-    0.79      12.3 +/-    0.79  0.060 / 0.130
G24     291.4          40.0               12.6 +/-    7.38      18.3 +/-    7.38  0.060 / 0.150
G28     104.9          32.6               10.3 +/-    0.59      17.1 +/-    0.59  0.060 / 0.050