PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/04-20:28:10
G02     202.6          32.0               17.1 +/-    2.92      28.9 +/-    2.92  0.080 / 0.220
G06     160.3          67.2               15.1 +/-    0.78      16.2 +/-    0.78  0.090 / 0.290
G12     306.6          14.5               11.6 +/-    2.80      29.2 +/-    2.80  0.060 / 0.110
G17     31.2           52.9               13.6 +/-    0.66      16.6 +/-    0.66  0.080 / 0.110
G19     350.1          67.3               12.9 +/-    0.59      13.8 +/-    0.59  0.040 / 0.050
G24     300.2          37.1               13.9 +/-    0.86      21.2 +/-    0.86  0.030 / 0.050
G28     100.1          32.8               14.5 +/-    1.47      24.0 +/-    1.47  0.070 / 0.140