PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/20-09:42:50
G03     243.6          70.3                5.0 +/-    0.41       5.3 +/-    0.41  0.030 / 0.040
G09     300.7          14.5                4.0 +/-    1.80      10.0 +/-    1.80  0.040 / 0.050
G14     96.4           16.8                3.0 +/-    1.10       7.1 +/-    1.10  0.030 / 0.050
G16     134.0          55.2                6.0 +/-    0.53       7.1 +/-    0.53  0.040 / 0.040
G22     197.1          58.4                5.1 +/-    0.48       5.9 +/-    0.48  0.150 / 0.290
G23     318.7          48.9                2.8 +/-    0.49       3.6 +/-    0.49  0.120 / 0.270
G26     76.2           53.4                3.8 +/-    0.62       4.6 +/-    0.62  0.050 / 0.060
G31     50.9           21.3                2.8 +/-    2.57       6.0 +/-    2.57  0.050 / 0.060