PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/14-23:58:10
G10     252.9          30.0               10.7 +/-    2.40      18.8 +/-    2.40  0.080 / 0.110
G13     50.7           27.3                6.7 +/-    2.24      12.5 +/-    2.24  0.070 / 0.130
G15     80.1           56.5               10.7 +/-    0.67      12.6 +/-    0.67  0.040 / 0.040
G16     293.9          15.3                6.1 +/-    1.50      15.0 +/-    1.50  0.050 / 0.050
G20     273.5          52.1               11.3 +/-    2.88      13.9 +/-    2.88  0.100 / 0.210
G21     337.0          61.5                9.4 +/-    0.72      10.5 +/-    0.72  0.110 / 0.130
G26     266.2          14.4                8.7 +/-    1.29      21.9 +/-    1.29  0.030 / 0.040
G29     163.8          46.2               11.1 +/-    0.61      14.7 +/-    0.61  0.030 / 0.040