PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/19-00:28:10
G10     248.1          24.6               15.3 +/-    0.92      30.2 +/-    0.92  0.040 / 0.040
G13     56.4           31.4               10.2 +/-    1.17      17.4 +/-    1.17  0.030 / 0.040
G15     96.8           58.8               12.4 +/-    0.83      14.3 +/-    0.83  0.050 / 0.110
G16     297.3          16.0               11.0 +/-    1.43      26.7 +/-    1.43  0.080 / 0.120
G20     257.6          33.9               14.3 +/-    3.62      23.2 +/-    3.62  0.130 / 0.330
G21     329.0          57.4               11.8 +/-    0.75      13.8 +/-    0.75  0.130 / 0.280
G26     269.1          16.9               14.1 +/-    0.95      33.6 +/-    0.95  0.030 / 0.030
G29     164.4          54.5               13.1 +/-    0.62      15.7 +/-    0.62  0.030 / 0.030