PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-13:58:00
G10     262.3          37.1                7.0 +/-    1.97      10.7 +/-    1.97  0.120 / 0.230
G13     43.9           20.6                5.8 +/-    2.72      12.7 +/-    2.72  0.110 / 0.200
G15     61.6           49.0                6.6 +/-    0.70       8.4 +/-    0.70  0.170 / 0.400
G16     283.0          14.2                3.4 +/-    1.96       8.5 +/-    1.96  0.210 / 0.420
G20     294.1          60.4                5.6 +/-    0.73       6.3 +/-    0.73  0.040 / 0.030
G21     355.7          68.9                4.3 +/-    0.56       4.6 +/-    0.56  0.040 / 0.040
G24     126.2          11.2                8.7 +/-    4.29      23.6 +/-    4.29  0.060 / 0.060
G27     320.6          15.0                2.6 +/-    2.30       6.5 +/-    2.30  0.040 / 0.070
G29     166.6          37.7                7.4 +/-    1.47      11.2 +/-    1.47  0.070 / 0.110