PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/02-11:12:50
G01     69.3           32.1                4.1 +/-    0.67       6.8 +/-    0.67  0.060 / 0.090
G07     137.0          28.9                4.3 +/-    1.05       7.8 +/-    1.05  0.060 / 0.090
G11     53.8           32.2                3.0 +/-    1.69       5.1 +/-    1.69  0.030 / 0.040
G13     273.1          38.6                3.3 +/-    1.09       5.0 +/-    1.09  0.030 / 0.040
G15     303.4          14.6               -0.6 +/-    1.87      -1.6 +/-    1.87  0.130 / 0.070
G17     230.4          66.0                4.0 +/-    0.92       4.3 +/-    0.92  0.110 / 0.090
G18     48.3           17.9                2.1 +/-    2.12       4.9 +/-    2.12  0.090 / 0.190
G19     223.2          43.9                4.6 +/-    2.14       6.2 +/-    2.14  0.100 / 0.190
G28     5.4            61.2                2.8 +/-    0.99       3.1 +/-    0.99  0.060 / 0.350
G30     135.8          63.0                5.1 +/-    0.41       5.6 +/-    0.41  0.070 / 0.320