PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-20:43:10
G01     37.9           11.1               11.1 +/-    2.28      30.2 +/-    2.28  0.130 / 0.280
G02     199.4          14.0               13.9 +/-    4.06      35.5 +/-    4.06  0.140 / 0.270
G06     174.8          44.0               14.2 +/-    0.43      19.4 +/-    0.43  0.070 / 0.150
G13     231.6          18.2               13.4 +/-    1.46      30.7 +/-    1.46  0.130 / 0.170
G17     12.9           65.5               12.5 +/-    1.03      13.6 +/-    1.03  0.040 / 0.060
G19     298.3          71.5               12.5 +/-    0.44      13.1 +/-    0.44  0.050 / 0.060
G24     313.5          24.8               11.0 +/-    1.37      21.6 +/-    1.37  0.130 / 0.260
G28     75.2           47.3               12.5 +/-    1.19      16.3 +/-    1.19  0.130 / 0.360
G30     155.3          19.4               12.8 +/-    2.29      28.6 +/-    2.29  0.060 / 0.060