PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-22:12:50
G01     57.4           29.4               10.6 +/-    1.61      18.8 +/-    1.61  0.130 / 0.350
G06     181.7          13.9              -20.0 +/-   14.73     -51.0 +/-   14.73  0.150 / 0.370
G07     142.5          15.2               12.3 +/-    1.73      30.4 +/-    1.73  0.050 / 0.050
G11     46.6           21.0                9.3 +/-    2.87      20.1 +/-    2.87  0.050 / 0.040
G13     259.0          35.0               14.9 +/-    1.30      23.7 +/-    1.30  0.100 / 0.070
G15     291.0          16.6                9.1 +/-    1.29      21.7 +/-    1.29  0.110 / 0.050
G17     272.5          78.9               12.4 +/-    0.68      12.6 +/-    0.68  0.090 / 0.090
G19     234.4          52.7               13.8 +/-    2.13      16.9 +/-    2.13  0.060 / 0.090
G28     32.7           58.0               10.8 +/-    0.47      12.5 +/-    0.47  0.050 / 0.040
G30     145.0          49.1               14.2 +/-    0.51      18.2 +/-    0.51  0.060 / 0.050