PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/16-20:28:00
G10     249.9          26.3               10.3 +/-    1.41      19.5 +/-    1.41  0.040 / 0.050
G13     54.2           30.1                9.0 +/-    2.24      15.7 +/-    2.24  0.050 / 0.050
G15     98.2           60.1                9.2 +/-    1.19      10.5 +/-    1.19  0.120 / 0.390
G16     295.9          15.7                6.8 +/-    1.26      16.7 +/-    1.26  0.130 / 0.360
G20     268.6          50.2                9.4 +/-    2.61      11.8 +/-    2.61  0.090 / 0.130
G21     332.9          59.6                9.2 +/-    0.58      10.5 +/-    0.58  0.120 / 0.150
G26     268.4          15.9                9.7 +/-    2.30      23.7 +/-    2.30  0.030 / 0.040
G29     164.6          51.5               11.4 +/-    0.54      14.1 +/-    0.54  0.030 / 0.030