PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/28-04:57:30
G03     255.1          70.2                5.6 +/-    0.56       5.9 +/-    0.56  0.130 / 0.230
G09     300.4          14.9                3.2 +/-    2.13       7.9 +/-    2.13  0.100 / 0.240
G14     94.7           19.0                4.0 +/-    1.81       9.1 +/-    1.81  0.120 / 0.240
G16     132.1          54.8                6.3 +/-    1.09       7.6 +/-    1.09  0.120 / 0.280
G22     202.4          61.0                6.2 +/-    0.92       7.0 +/-    0.92  0.050 / 0.060
G23     317.5          47.7                4.0 +/-    0.69       5.2 +/-    0.69  0.040 / 0.050
G26     76.7           53.0                4.8 +/-    0.46       5.9 +/-    0.46  0.040 / 0.040
G31     50.5           21.7                2.8 +/-    2.35       6.0 +/-    2.35  0.040 / 0.040