PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-18:12:30
G02     219.3          60.3               15.0 +/-    0.57      17.0 +/-    0.57  0.040 / 0.070
G06     50.7           71.0               13.7 +/-    0.46      14.4 +/-    0.46  0.060 / 0.070
G12     320.1          40.5               12.4 +/-    1.32      17.9 +/-    1.32  0.050 / 0.130
G17     62.4           27.7               10.3 +/-    1.34      19.0 +/-    1.34  0.050 / 0.100
G19     46.1           45.0               11.9 +/-    1.28      16.1 +/-    1.28  0.080 / 0.080
G24     262.9          40.6               14.3 +/-    1.03      20.6 +/-    1.03  0.080 / 0.070
G28     125.5          10.4               11.4 +/-    2.43      31.6 +/-    2.43  0.030 / 0.070