PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/28-22:57:40
G10     251.5          28.9               12.7 +/-    1.59      22.7 +/-    1.59  0.040 / 0.050
G13     52.1           28.2                7.0 +/-    2.03      12.7 +/-    2.03  0.040 / 0.040
G15     83.8           57.2               11.3 +/-    0.98      13.2 +/-    0.98  0.070 / 0.180
G16     295.2          15.5                6.1 +/-    2.08      15.1 +/-    2.08  0.090 / 0.200
G20     271.3          51.1               12.1 +/-    3.03      15.1 +/-    3.03  0.030 / 0.030
G21     334.6          60.2                9.5 +/-    0.76      10.8 +/-    0.76  0.030 / 0.030
G26     267.5          15.1                8.0 +/-    1.95      19.9 +/-    1.95  0.100 / 0.440
G29     163.5          48.5               11.2 +/-    0.61      14.4 +/-    0.61  0.110 / 0.410