PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-00:58:00
G10     256.2          31.1               16.8 +/-    1.84      28.7 +/-    1.84  0.040 / 0.040
G13     48.3           26.0               11.0 +/-    2.24      20.9 +/-    2.24  0.040 / 0.040
G15     77.4           57.1               11.9 +/-    0.59      13.9 +/-    0.59  0.120 / 0.190
G16     288.0          15.1               10.6 +/-    3.17      26.2 +/-    3.17  0.130 / 0.260
G20     267.5          41.3               11.4 +/-    3.80      16.3 +/-    3.80  0.140 / 0.460
G21     340.7          64.0               11.9 +/-    0.61      13.1 +/-    0.61  0.120 / 0.560
G26     260.5          12.9               15.3 +/-    2.62      40.1 +/-    2.62  0.030 / 0.030
G29     166.7          43.9               14.2 +/-    0.69      19.5 +/-    0.69  0.030 / 0.040