PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/13-01:57:40
G10     277.0          43.6               11.1 +/-    1.53      15.3 +/-    1.53  0.090 / 0.130
G13     38.7           11.3                8.6 +/-    2.43      23.4 +/-    2.43  0.120 / 0.150
G15     52.7           43.7                9.9 +/-    0.94      13.6 +/-    0.94  0.050 / 0.040
G20     295.1          55.1               15.1 +/-    0.61      18.0 +/-    0.61  0.040 / 0.030
G21     27.0           76.2               11.3 +/-    0.84      11.6 +/-    0.84  0.370 / 0.410
G24     111.6          19.3               11.3 +/-    1.49      25.4 +/-    1.49  0.200 / 0.350
G27     313.8          25.3                7.6 +/-    2.63      14.7 +/-    2.63  0.100 / 0.190
G29     169.0          23.0               11.9 +/-    1.17      24.3 +/-    1.17  0.100 / 0.140
G32     205.4          18.9               14.1 +/-    3.42      31.8 +/-    3.42  0.030 / 0.040