PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/28-05:42:40
G01     223.0          13.9                5.7 +/-    2.29      14.5 +/-    2.29  0.040 / 0.040
G03     279.0          68.1                4.0 +/-    1.14       4.2 +/-    1.14  0.030 / 0.050
G09     297.8          13.2                1.8 +/-    2.06       4.7 +/-    2.06  0.210 / 0.330
G14     90.3           22.0                2.2 +/-    0.86       4.5 +/-    0.86  0.170 / 0.580
G16     137.6          50.7                4.7 +/-    1.14       5.9 +/-    1.14  0.050 / 0.090
G22     211.3          67.2                3.1 +/-    0.90       3.4 +/-    0.90  0.080 / 0.070
G23     310.2          39.7                3.0 +/-    1.49       4.5 +/-    1.49  0.120 / 0.190
G26     84.8           53.4                3.1 +/-    1.17       3.8 +/-    1.17  0.090 / 0.190
G31     47.7           26.2                2.8 +/-    2.06       5.3 +/-    2.06  0.050 / 0.060