PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-18:28:10
G02     205.7          39.6               12.9 +/-    1.27      18.9 +/-    1.27  0.130 / 0.190
G06     139.7          75.6               11.2 +/-    0.77      11.5 +/-    0.77  0.070 / 0.110
G12     311.6          22.6               10.1 +/-    1.98      21.0 +/-    1.98  0.090 / 0.090
G17     41.0           45.3                9.5 +/-    1.09      12.7 +/-    1.09  0.050 / 0.080
G19     7.4            63.0                9.9 +/-    0.56      11.0 +/-    0.56  0.030 / 0.040
G24     289.7          41.2                9.6 +/-    7.02      13.8 +/-    7.02  0.030 / 0.030
G28     108.0          27.2               11.4 +/-    0.56      21.2 +/-    0.56  0.030 / 0.040