PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/13-17:28:10
G02     212.5          51.7               13.7 +/-    1.01      16.9 +/-    1.01  0.060 / 0.080
G06     76.9           78.2                9.3 +/-    0.42       9.5 +/-    0.42  0.070 / 0.090
G12     317.2          32.1               12.2 +/-    0.98      20.4 +/-    0.98  0.060 / 0.070
G17     55.2           33.3                7.5 +/-    0.81      12.4 +/-    0.81  0.060 / 0.080
G19     36.1           50.9                8.4 +/-    0.37      10.5 +/-    0.37  0.040 / 0.070
G24     275.0          42.0               10.2 +/-    1.23      14.3 +/-    1.23  0.040 / 0.080
G28     119.5          17.1                8.5 +/-    1.69      20.2 +/-    1.69  0.050 / 0.060