PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/06-16:27:50
G01     61.1           30.9                8.9 +/-    0.91      15.2 +/-    0.91  0.030 / 0.030
G07     141.9          23.3               11.4 +/-    1.80      23.2 +/-    1.80  0.040 / 0.030
G11     48.6           24.2                9.5 +/-    1.96      18.8 +/-    1.96  0.040 / 0.040
G13     263.5          35.6               11.6 +/-    1.73      18.1 +/-    1.73  0.040 / 0.050
G15     296.7          15.4                7.2 +/-    0.85      17.6 +/-    0.85  0.040 / 0.050
G17     254.5          75.2               12.2 +/-    0.43      12.6 +/-    0.43  0.030 / 0.060
G18     42.8           13.4                8.2 +/-    2.70      21.3 +/-    2.70  0.080 / 0.120
G19     231.2          47.1               12.3 +/-    2.36      16.2 +/-    2.36  0.070 / 0.100
G28     34.1           57.0               13.2 +/-    1.10      15.5 +/-    1.10  0.090 / 0.110
G30     143.2          53.9               13.3 +/-    0.61      16.0 +/-    0.61  0.100 / 0.110