PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-06:43:10
G10     257.1          31.5                6.9 +/-    1.41      11.8 +/-    1.41  0.030 / 0.040
G13     47.9           25.7                5.5 +/-    1.98      10.6 +/-    1.98  0.040 / 0.050
G15     71.8           54.5                5.7 +/-    0.56       6.9 +/-    0.56  0.090 / 0.330
G16     288.1          14.6                3.0 +/-    1.54       7.5 +/-    1.54  0.100 / 0.290
G20     1.0            68.9                4.5 +/-    0.35       4.8 +/-    0.35  0.130 / 0.150
G21     343.9          65.4                5.5 +/-    0.47       6.0 +/-    0.47  0.580 / 0.350
G26     260.0          12.5                5.7 +/-    2.47      15.2 +/-    2.47  0.040 / 0.030
G27     321.8          11.5              -10.3 +/-   17.69     -27.9 +/-   17.69  0.040 / 0.040
G29     166.6          41.9                5.7 +/-    0.59       8.0 +/-    0.59  0.050 / 0.060