PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/18-14:57:40
G10     272.6          41.8                5.7 +/-    1.03       8.1 +/-    1.03  0.040 / 0.040
G13     39.8           14.1                3.4 +/-    1.69       8.5 +/-    1.69  0.030 / 0.040
G15     55.2           46.0                4.4 +/-    0.59       5.9 +/-    0.59  0.060 / 0.080
G16     276.3          10.4                2.8 +/-    2.62       7.8 +/-    2.62  0.060 / 0.070
G20     307.7          62.3                4.4 +/-    1.46       4.9 +/-    1.46  0.090 / 0.190
G21     30.4           74.9                5.2 +/-    0.56       5.3 +/-    0.56  0.110 / 0.230
G24     112.1          17.4                6.8 +/-    1.65      16.1 +/-    1.65  0.140 / 0.350
G27     317.5          20.4                4.3 +/-    2.55       9.4 +/-    2.55  0.110 / 0.320
G29     167.2          24.6                7.4 +/-    0.56      14.5 +/-    0.56  0.130 / 0.250
G32     205.2          12.6                7.4 +/-    2.20      19.4 +/-    2.20  0.130 / 0.230