PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/30-18:43:00
G10     254.3          31.4               17.4 +/-    1.65      29.7 +/-    1.65  0.040 / 0.050
G13     49.4           26.2               12.8 +/-    1.87      24.4 +/-    1.87  0.040 / 0.050
G15     77.5           56.1               12.7 +/-    0.99      14.9 +/-    0.99  0.130 / 0.430
G16     291.0          15.6               12.3 +/-    1.67      30.2 +/-    1.67  0.150 / 0.440
G20     277.5          54.6               13.9 +/-    3.14      16.6 +/-    3.14  0.140 / 0.180
G21     338.9          62.4               14.0 +/-    0.76      15.6 +/-    0.76  0.170 / 0.190
G26     264.2          13.8               13.9 +/-    2.80      35.7 +/-    2.80  0.040 / 0.040
G29     164.9          46.3               14.2 +/-    1.43      18.9 +/-    1.43  0.040 / 0.040