PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/15-00:57:50
G10     252.9          28.6               13.4 +/-    3.04      24.2 +/-    3.04  0.160 / 0.660
G13     51.2           28.3                8.5 +/-    0.95      15.5 +/-    0.95  0.140 / 0.660
G15     84.5           58.2               12.2 +/-    0.59      14.1 +/-    0.59  0.040 / 0.050
G16     291.7          15.7                9.3 +/-    2.49      22.8 +/-    2.49  0.040 / 0.040
G20     264.2          40.0               15.1 +/-    0.87      22.0 +/-    0.87  0.080 / 0.150
G21     335.8          61.4               11.2 +/-    0.61      12.6 +/-    0.61  0.090 / 0.140
G26     263.8          14.6               12.1 +/-    1.47      30.4 +/-    1.47  0.030 / 0.060
G29     165.9          48.0               12.8 +/-    1.32      16.5 +/-    1.32  0.030 / 0.070