PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-15:57:30
G01     40.8           16.2                7.9 +/-    2.43      19.1 +/-    2.43  0.040 / 0.070
G06     174.4          38.0               10.1 +/-    1.22      15.3 +/-    1.22  0.040 / 0.070
G13     237.1          23.1               10.2 +/-    2.26      20.8 +/-    2.26  0.140 / 0.190
G15     271.3          12.4                9.8 +/-    2.64      25.9 +/-    2.64  0.140 / 0.200
G17     351.7          72.8                9.8 +/-    0.42      10.2 +/-    0.42  0.030 / 0.030
G19     276.5          69.9               10.2 +/-    0.53      10.7 +/-    0.53  0.020 / 0.030
G24     316.7          18.1                8.8 +/-    3.32      20.2 +/-    3.32  0.040 / 0.040
G28     64.0           51.6                9.8 +/-    1.34      12.2 +/-    1.34  0.040 / 0.040
G30     153.9          27.0               10.0 +/-    0.72      18.7 +/-    0.72  0.060 / 0.110