PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/24-07:57:50
G10     259.8          34.5                5.0 +/-    2.64       8.0 +/-    2.64  0.040 / 0.040
G13     45.6           22.9                4.0 +/-    2.13       8.2 +/-    2.13  0.030 / 0.030
G15     67.2           52.7                4.6 +/-    1.47       5.6 +/-    1.47  0.090 / 0.200
G16     291.3          13.1                3.5 +/-    1.28       9.1 +/-    1.28  0.070 / 0.230
G20     285.3          57.0                5.1 +/-    2.00       6.0 +/-    2.00  0.100 / 0.090
G21     355.7          68.7                4.9 +/-    0.63       5.2 +/-    0.63  0.120 / 0.070
G24     124.8          10.3               -5.1 +/-   29.45     -14.1 +/-   29.45  0.140 / 0.260
G26     263.0          11.2                3.3 +/-    2.61       8.8 +/-    2.61  0.150 / 0.280
G27     322.0          11.4               -4.8 +/-   24.03     -13.1 +/-   24.03  0.630 / 0.400
G29     163.4          33.3                6.6 +/-    0.60      10.8 +/-    0.60  0.480 / 0.320