PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-16:12:50
G01     89.6           32.0               11.7 +/-    0.52      19.7 +/-    0.52  0.040 / 0.060
G07     126.0          45.3               13.0 +/-    0.75      17.5 +/-    0.75  0.040 / 0.060
G11     68.0           39.6                9.3 +/-    0.66      13.6 +/-    0.66  0.030 / 0.030
G13     293.9          36.2                9.5 +/-    1.22      14.7 +/-    1.22  0.030 / 0.040
G17     215.1          53.0               12.1 +/-    1.48      14.8 +/-    1.48  0.090 / 0.120
G18     63.2           23.7               10.0 +/-    0.69      20.0 +/-    0.69  0.090 / 0.100
G19     215.1          25.3               12.8 +/-    2.20      24.9 +/-    2.20  0.040 / 0.090
G28     350.1          61.7                8.8 +/-    0.69       9.9 +/-    0.69  0.050 / 0.100
G30     105.3          76.0               12.0 +/-    0.55      12.3 +/-    0.55  0.040 / 0.060