PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/08/16-13:57:40
G02     200.7          14.5                7.2 +/-    4.19      18.3 +/-    4.19  0.030 / 0.030
G06     170.7          50.0                8.0 +/-    0.75      10.0 +/-    0.75  0.030 / 0.030
G13     228.7          16.0                7.1 +/-    2.64      17.3 +/-    2.64  0.140 / 0.190
G17     10.5           65.6                7.5 +/-    1.09       8.2 +/-    1.09  0.130 / 0.190
G19     314.3          72.1                6.4 +/-    0.48       6.7 +/-    0.48  0.040 / 0.060
G24     312.5          25.9                5.5 +/-    1.09      10.5 +/-    1.09  0.050 / 0.040
G28     77.9           47.1                7.4 +/-    0.70       9.7 +/-    0.70  0.150 / 0.330
G30     156.7          18.4                6.1 +/-    1.45      14.0 +/-    1.45  0.180 / 0.290