PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-23:27:40
G10     262.6          36.8               14.9 +/-    2.00      22.9 +/-    2.00  0.110 / 0.240
G13     43.8           20.6                9.0 +/-    1.96      19.6 +/-    1.96  0.160 / 0.240
G15     64.2           51.7               10.6 +/-    1.15      13.1 +/-    1.15  0.050 / 0.040
G16     283.8          13.7                9.6 +/-    1.88      24.6 +/-    1.88  0.050 / 0.040
G20     289.2          57.8               12.6 +/-    1.43      14.6 +/-    1.43  0.190 / 0.210
G21     352.0          68.3               12.0 +/-    0.49      12.8 +/-    0.49  0.240 / 0.220
G24     125.0          11.5               12.5 +/-    3.08      33.8 +/-    3.08  0.030 / 0.040
G27     320.8          14.7                8.3 +/-    1.50      20.9 +/-    1.50  0.030 / 0.040
G29     166.2          35.7               13.1 +/-    1.26      20.6 +/-    1.26  0.130 / 0.430