PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/12-00:57:40
G10     248.2          24.7               12.2 +/-    2.31      24.0 +/-    2.31  0.160 / 0.570
G13     56.2           31.4               11.2 +/-    0.60      19.1 +/-    0.60  0.150 / 0.680
G15     96.0           58.7               13.4 +/-    0.39      15.4 +/-    0.39  0.080 / 0.130
G16     297.2          16.0               10.2 +/-    1.98      24.8 +/-    1.98  0.080 / 0.110
G20     259.4          37.8               14.6 +/-    0.98      22.0 +/-    0.98  0.030 / 0.050
G21     329.2          57.6               11.2 +/-    0.78      13.0 +/-    0.78  0.030 / 0.050
G26     269.0          16.8               13.2 +/-    1.36      31.5 +/-    1.36  0.060 / 0.150
G29     164.5          54.3               12.7 +/-    1.40      15.3 +/-    1.40  0.050 / 0.140