PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/28-19:42:50
G02     213.4          55.4               15.3 +/-    0.84      18.2 +/-    0.84  0.060 / 0.100
G06     66.5           75.9               12.5 +/-    0.96      12.9 +/-    0.96  0.070 / 0.080
G12     318.0          35.0               11.1 +/-    1.81      17.7 +/-    1.81  0.050 / 0.120
G17     53.7           35.6               11.6 +/-    1.25      18.2 +/-    1.25  0.060 / 0.090
G19     31.7           53.5               12.5 +/-    0.58      15.1 +/-    0.58  0.090 / 0.310
G24     269.3          42.5               12.8 +/-    0.55      17.9 +/-    0.55  0.080 / 0.310
G28     120.1          16.4               12.8 +/-    1.42      30.8 +/-    1.42  0.070 / 0.090