PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/28-22:12:50
G02     54.2           36.9                9.3 +/-    0.46      14.2 +/-    0.46  0.200 / 0.410
G05     67.8           65.2                9.9 +/-    0.42      10.8 +/-    0.42  0.160 / 0.370
G12     186.9          40.9               13.7 +/-    1.29      19.6 +/-    1.29  0.050 / 0.060
G13     131.5          10.9                8.3 +/-   30.47      22.8 +/-   30.47  0.050 / 0.070
G21     266.7          13.1               13.6 +/-    7.32      35.3 +/-    7.32  0.060 / 0.110
G25     247.8          55.7               11.5 +/-    0.94      13.6 +/-    0.94  0.050 / 0.100
G29     325.7          50.2               10.8 +/-    0.93      13.6 +/-    0.93  0.080 / 0.070