PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/24-05:57:50
G10     263.0          36.7                9.4 +/-    1.20      14.4 +/-    1.20  0.030 / 0.040
G13     43.7           20.6                4.1 +/-    1.99       8.9 +/-    1.99  0.040 / 0.030
G15     62.7           50.5                3.5 +/-    1.06       4.4 +/-    1.06  0.120 / 0.090
G20     290.6          58.5                5.6 +/-    1.12       6.5 +/-    1.12  0.120 / 0.060
G21     358.7          69.9                4.4 +/-    0.80       4.6 +/-    0.80  0.120 / 0.250
G24     123.0          12.0                5.5 +/-    2.67      14.7 +/-    2.67  0.140 / 0.240
G27     320.9          14.2                3.0 +/-    3.86       7.5 +/-    3.86  0.130 / 0.160
G29     164.8          31.7                5.3 +/-    0.83       8.9 +/-    0.83  0.150 / 0.320