PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-22:42:30
G02     202.7          34.6               18.5 +/-    2.64      29.6 +/-    2.64  0.110 / 0.290
G06     166.5          66.2               15.2 +/-    0.96      16.4 +/-    0.96  0.150 / 0.250
G12     306.0          12.5               10.0 +/-    1.50      26.5 +/-    1.50  0.070 / 0.090
G17     36.0           49.0               11.5 +/-    0.41      14.7 +/-    0.41  0.060 / 0.080
G19     0.2            65.6               11.9 +/-    0.55      12.9 +/-    0.55  0.040 / 0.040
G24     297.3          38.6               12.2 +/-    1.29      18.1 +/-    1.29  0.040 / 0.040
G28     99.5           35.3               13.2 +/-    0.62      20.8 +/-    0.62  0.050 / 0.120