PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-06:43:00
G10     256.7          31.2                6.1 +/-    2.71      10.4 +/-    2.71  0.100 / 0.410
G13     48.2           26.0                4.9 +/-    0.82       9.4 +/-    0.82  0.100 / 0.350
G15     72.6           54.7                4.6 +/-    0.33       5.6 +/-    0.33  0.140 / 0.390
G16     288.5          14.7                2.3 +/-    2.03       5.7 +/-    2.03  0.150 / 0.350
G20     359.8          69.1                4.2 +/-    0.76       4.5 +/-    0.76  0.040 / 0.050
G21     343.2          65.1                2.1 +/-    0.99       2.3 +/-    0.99  0.040 / 0.060
G26     260.4          12.7                6.0 +/-    1.67      15.7 +/-    1.67  0.080 / 0.110
G27     321.9          11.1               -6.7 +/-   26.21     -18.2 +/-   26.21  0.090 / 0.110
G29     166.6          42.4                6.5 +/-    0.87       9.1 +/-    0.87  0.040 / 0.050