PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/25-17:42:30
G02     200.7          21.6               12.2 +/-    1.84      25.8 +/-    1.84  0.060 / 0.080
G06     169.9          55.3               11.7 +/-    0.67      13.9 +/-    0.67  0.040 / 0.090
G13     224.9          12.3                9.2 +/-    6.32      24.5 +/-    6.32  0.110 / 0.220
G17     21.1           60.0                9.4 +/-    1.17      10.7 +/-    1.17  0.240 / 0.190
G19     331.5          70.9                9.2 +/-    0.35       9.6 +/-    0.35  0.080 / 0.130
G24     308.7          30.6                9.0 +/-    0.98      15.7 +/-    0.98  0.080 / 0.130
G28     85.7           43.3               10.1 +/-    1.03      14.0 +/-    1.03  0.040 / 0.040
G30     156.5          11.0               11.0 +/-    5.37      29.9 +/-    5.37  0.040 / 0.030