PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-23:42:50
G02     217.7          62.9               12.5 +/-    0.87      13.8 +/-    0.87  0.040 / 0.090
G06     57.3           76.1               10.6 +/-    1.00      10.9 +/-    1.00  0.060 / 0.080
G12     318.0          35.0                8.7 +/-    1.48      13.9 +/-    1.48  0.060 / 0.080
G17     59.0           30.4               10.1 +/-    0.76      17.5 +/-    0.76  0.070 / 0.070
G19     41.3           47.7               10.2 +/-    0.72      13.3 +/-    0.72  0.050 / 0.070
G24     261.2          41.2               11.9 +/-    1.37      16.9 +/-    1.37  0.040 / 0.070
G28     122.6          16.1               13.0 +/-    1.94      31.4 +/-    1.94  0.070 / 0.310