PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-08:42:50
G10     259.7          34.5                6.5 +/-    1.90      10.4 +/-    1.90  0.110 / 0.340
G13     45.6           23.0                1.9 +/-    0.99       4.0 +/-    0.99  0.130 / 0.320
G15     67.3           52.8                4.6 +/-    0.49       5.6 +/-    0.49  0.060 / 0.110
G16     291.7          13.0                4.2 +/-    2.71      10.8 +/-    2.71  0.070 / 0.110
G20     285.2          57.0                5.5 +/-    1.02       6.4 +/-    1.02  0.140 / 0.340
G21     357.0          69.0                3.4 +/-    0.69       3.6 +/-    0.69  0.160 / 0.330
G24     124.6          10.3              -14.0 +/-   30.59     -38.9 +/-   30.59  0.040 / 0.100
G26     263.5          11.2                5.0 +/-    3.13      13.6 +/-    3.13  0.060 / 0.080
G27     322.0          11.2               -5.6 +/-   26.65     -15.1 +/-   26.65  0.040 / 0.040
G29     163.7          33.8                6.7 +/-    2.50      10.9 +/-    2.50  0.040 / 0.040