PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/24-15:28:00
G02     200.2          13.5                8.2 +/-    2.60      21.2 +/-    2.60  0.050 / 0.070
G06     171.8          47.7               10.7 +/-    1.15      13.9 +/-    1.15  0.050 / 0.060
G13     230.2          17.2                8.9 +/-    1.41      20.9 +/-    1.41  0.030 / 0.030
G17     8.2            66.7                8.4 +/-    0.64       9.0 +/-    0.64  0.030 / 0.040
G19     306.7          72.1                8.8 +/-    0.39       9.2 +/-    0.39  0.040 / 0.050
G24     313.3          24.8                7.4 +/-    1.10      14.5 +/-    1.10  0.050 / 0.040
G28     75.9           47.7               10.0 +/-    1.33      13.0 +/-    1.33  0.030 / 0.040
G30     156.0          19.2                7.9 +/-    1.51      17.8 +/-    1.51  0.030 / 0.030