PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-19:58:10
G01     42.2           18.0               11.9 +/-    3.79      27.4 +/-    3.79  0.040 / 0.060
G06     176.5          34.3               16.2 +/-    1.48      26.1 +/-    1.48  0.040 / 0.050
G13     239.2          24.4               15.6 +/-    1.17      31.0 +/-    1.17  0.190 / 0.370
G15     272.7          13.2               12.5 +/-    1.07      32.5 +/-    1.07  0.220 / 0.320
G17     354.9          72.9               14.9 +/-    0.34      15.5 +/-    0.34  0.130 / 0.320
G19     269.1          68.1               15.5 +/-    0.81      16.5 +/-    0.81  0.130 / 0.300
G24     317.0          17.3               11.8 +/-    2.25      27.8 +/-    2.25  0.040 / 0.040
G28     62.2           51.7               13.8 +/-    0.98      17.1 +/-    0.98  0.040 / 0.030
G30     153.1          28.2               16.7 +/-    0.58      30.5 +/-    0.58  0.070 / 0.100