PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/06-16:12:40
G02     220.4          63.2               18.7 +/-    0.58      20.7 +/-    0.58  0.070 / 0.080
G06     49.3           70.7               18.7 +/-    0.34      19.6 +/-    0.34  0.070 / 0.090
G12     320.1          40.6               16.8 +/-    1.10      24.2 +/-    1.10  0.050 / 0.070
G17     63.3           27.0               14.7 +/-    0.86      27.4 +/-    0.86  0.040 / 0.070
G19     47.3           44.3               16.5 +/-    0.90      22.4 +/-    0.90  0.030 / 0.030
G24     261.3          40.2               16.4 +/-    0.91      23.8 +/-    0.91  0.040 / 0.030