PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/19-09:58:10
G02     202.0          32.9                7.9 +/-    0.86      13.0 +/-    0.86  0.050 / 0.110
G06     170.6          63.4                7.6 +/-    0.45       8.4 +/-    0.45  0.070 / 0.100
G12     305.9          12.1                1.4 +/-   10.87       3.7 +/-   10.87  0.060 / 0.070
G17     35.2           49.9                3.4 +/-    0.61       4.3 +/-    0.61  0.050 / 0.080
G19     359.6          66.1                4.1 +/-    0.56       4.4 +/-    0.56  0.030 / 0.030
G24     302.1          35.7                4.1 +/-    1.79       6.5 +/-    1.79  0.040 / 0.030
G28     100.5          32.3                7.7 +/-    0.82      12.9 +/-    0.82  0.150 / 0.210