PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/08-16:42:50
G01     50.9           26.1                9.6 +/-    1.24      18.3 +/-    1.24  0.050 / 0.080
G06     176.7          25.4               13.2 +/-    2.11      25.6 +/-    2.11  0.040 / 0.070
G07     146.0          13.5               12.8 +/-    3.14      32.9 +/-    3.14  0.080 / 0.130
G11     44.8           15.6                8.2 +/-    2.44      20.1 +/-    2.44  0.060 / 0.120
G13     251.4          31.0               12.6 +/-    1.22      21.7 +/-    1.22  0.030 / 0.060
G15     286.8          15.2                9.8 +/-    1.75      24.3 +/-    1.75  0.040 / 0.060
G17     306.0          78.6               12.4 +/-    0.74      12.6 +/-    0.74  0.170 / 0.310
G19     243.6          56.4               13.3 +/-    1.28      15.7 +/-    1.28  0.130 / 0.360
G28     50.9           53.3               10.5 +/-    0.28      12.8 +/-    0.28  0.170 / 0.500
G30     149.5          43.0               13.7 +/-    1.70      19.0 +/-    1.70  0.170 / 0.490