PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/28-15:42:30
G03     296.8          66.6                9.4 +/-    0.59      10.1 +/-    0.59  0.060 / 0.130
G14     79.0           30.8                7.6 +/-    1.55      13.1 +/-    1.55  0.060 / 0.130
G16     151.4          38.6               12.0 +/-    0.76      17.9 +/-    0.76  0.030 / 0.030
G18     208.4          12.3               11.7 +/-    2.40      31.1 +/-    2.40  0.030 / 0.030
G22     224.0          74.8               10.5 +/-    0.49      10.9 +/-    0.49  0.080 / 0.070
G23     303.9          35.2                7.9 +/-    2.12      12.5 +/-    2.12  0.070 / 0.090
G26     107.6          52.0               10.4 +/-    0.48      12.8 +/-    0.48  0.040 / 0.040
G31     43.3           36.8                7.1 +/-    1.46      10.8 +/-    1.46  0.040 / 0.030