PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-19:28:10
G02     237.5          73.9                9.8 +/-    0.60      10.1 +/-    0.60  0.030 / 0.040
G05     172.0          14.9               12.0 +/-    2.78      29.8 +/-    2.78  0.030 / 0.030
G06     40.9           60.4                8.9 +/-    0.43      10.0 +/-    0.43  0.090 / 0.100
G12     320.8          48.2                8.6 +/-    0.60      11.1 +/-    0.60  0.100 / 0.100
G17     68.2           24.8                8.0 +/-    1.49      15.8 +/-    1.49  0.060 / 0.100
G19     55.8           38.6                8.1 +/-    1.25      12.1 +/-    1.25  0.060 / 0.110
G24     247.1          35.5               12.1 +/-    2.06      19.0 +/-    2.06  0.040 / 0.030