PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-17:42:30
G02     202.3          27.6               11.5 +/-    1.91      21.3 +/-    1.91  0.110 / 0.110
G06     162.4          64.5               11.4 +/-    0.46      12.5 +/-    0.46  0.150 / 0.100
G12     305.4          13.9               11.1 +/-    1.10      28.3 +/-    1.10  0.040 / 0.030
G17     30.4           53.6               10.0 +/-    0.83      12.1 +/-    0.83  0.050 / 0.030
G19     339.6          68.7               10.3 +/-    0.47      11.0 +/-    0.47  0.080 / 0.220
G24     302.6          36.0               11.4 +/-    1.99      17.8 +/-    1.99  0.100 / 0.230
G28     96.9           34.8               11.8 +/-    1.16      18.7 +/-    1.16  0.040 / 0.030