PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/07-15:12:30
G10     258.3          33.1                9.6 +/-    1.65      15.8 +/-    1.65  0.040 / 0.050
G13     46.7           24.2                6.2 +/-    0.84      12.4 +/-    0.84  0.060 / 0.050
G15     72.5           55.6                8.7 +/-    0.44      10.3 +/-    0.44  0.060 / 0.110
G16     288.7          14.2                5.2 +/-    1.70      13.1 +/-    1.70  0.070 / 0.120
G20     282.5          56.0                9.8 +/-    1.03      11.5 +/-    1.03  0.110 / 0.340
G21     352.2          67.7                5.5 +/-    0.67       5.9 +/-    0.67  0.110 / 0.330
G26     262.6          11.9                5.9 +/-    1.44      15.8 +/-    1.44  0.060 / 0.070
G29     165.6          39.2               11.3 +/-    1.05      16.6 +/-    1.05  0.040 / 0.080