PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/30-16:12:50
G01     51.6           26.3                7.3 +/-    1.86      13.9 +/-    1.86  0.030 / 0.050
G06     177.9          22.0               11.8 +/-    1.26      24.7 +/-    1.26  0.040 / 0.060
G07     144.5          11.0               10.4 +/-    2.13      28.5 +/-    2.13  0.190 / 0.370
G11     45.0           17.4                7.2 +/-    2.39      16.8 +/-    2.39  0.230 / 0.240
G13     252.0          32.5                9.5 +/-    2.75      15.8 +/-    2.75  0.130 / 0.290
G15     285.7          16.1               10.3 +/-    1.47      24.9 +/-    1.47  0.130 / 0.250
G17     287.8          78.3               10.7 +/-    0.46      10.9 +/-    0.46  0.030 / 0.030
G19     242.2          59.0               11.0 +/-    1.66      12.6 +/-    1.66  0.050 / 0.030
G28     39.8           57.2               10.6 +/-    1.49      12.3 +/-    1.49  0.050 / 0.060
G30     148.0          42.0               11.1 +/-    1.07      15.6 +/-    1.07  0.040 / 0.040