PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/11-18:28:00
G10     268.1          40.3               12.1 +/-    1.30      17.5 +/-    1.30  0.150 / 0.170
G13     41.2           16.7                9.6 +/-    2.28      22.8 +/-    2.28  0.170 / 0.220
G15     57.8           47.5                9.9 +/-    0.82      12.9 +/-    0.82  0.060 / 0.030
G20     301.9          61.5               10.8 +/-    0.67      12.1 +/-    0.67  0.070 / 0.040
G21     3.2            71.6               12.3 +/-    0.97      12.9 +/-    0.97  0.130 / 0.270
G24     121.9          14.3               13.6 +/-    2.66      34.4 +/-    2.66  0.140 / 0.290
G27     318.7          19.1                8.0 +/-    1.43      18.1 +/-    1.43  0.050 / 0.090
G29     167.4          31.7               14.0 +/-    1.23      23.7 +/-    1.23  0.060 / 0.080