PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/30-17:42:30
G10     255.9          31.2                8.6 +/-    3.26      14.6 +/-    3.26  0.050 / 0.040
G13     48.5           25.9                7.0 +/-    0.95      13.3 +/-    0.95  0.050 / 0.050
G15     79.4           57.8                6.8 +/-    0.39       7.9 +/-    0.39  0.120 / 0.490
G16     290.0          14.9                6.6 +/-    1.70      16.5 +/-    1.70  0.130 / 0.380
G20     278.4          54.5                7.9 +/-    0.92       9.5 +/-    0.92  0.070 / 0.210
G21     344.4          65.1                4.3 +/-    0.80       4.7 +/-    0.80  0.070 / 0.220
G26     263.4          13.0                8.2 +/-    1.62      21.3 +/-    1.62  0.030 / 0.030
G29     165.7          43.0               10.6 +/-    0.89      14.7 +/-    0.89  0.030 / 0.040