PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-21:13:10
G01     49.5           25.0               12.6 +/-    0.37      24.7 +/-    0.37  0.090 / 0.210
G06     179.3          22.7               19.8 +/-    1.75      40.8 +/-    1.75  0.080 / 0.170
G11     44.2           14.1                9.9 +/-    2.17      25.1 +/-    2.17  0.060 / 0.090
G13     249.4          30.8               15.5 +/-    3.65      26.8 +/-    3.65  0.060 / 0.100
G15     282.6          15.8               12.5 +/-    2.70      30.6 +/-    2.70  0.040 / 0.040
G17     319.1          78.9               13.4 +/-    2.24      13.6 +/-    2.24  0.040 / 0.050
G19     246.3          60.3               14.4 +/-    1.91      16.3 +/-    1.91  0.060 / 0.140
G28     46.5           55.5               11.9 +/-    1.86      14.2 +/-    1.86  0.060 / 0.110
G30     149.4          39.7               15.4 +/-    2.31      22.5 +/-    2.31  0.030 / 0.050