PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-00:28:00
G01     320.2          14.9               -7.0 +/-   32.13     -17.6 +/-   32.13  0.080 / 0.300
G08     259.2          15.0                8.2 +/-    1.91      20.5 +/-    1.91  0.110 / 0.370
G10     74.2           54.8                8.2 +/-    0.46       9.8 +/-    0.46  0.220 / 0.290
G11     305.5          21.9                5.5 +/-    1.84      11.5 +/-    1.84  0.190 / 0.390
G14     284.0          69.2                7.3 +/-    0.46       7.8 +/-    0.46  0.030 / 0.050
G18     307.2          38.6                5.3 +/-    0.75       7.9 +/-    0.75  0.030 / 0.050
G20     102.1          31.7                9.6 +/-    0.56      16.3 +/-    0.56  0.120 / 0.390
G27     227.5          11.4                9.1 +/-    2.22      24.6 +/-    2.22  0.140 / 0.270
G31     176.4          38.5               11.5 +/-    1.11      17.2 +/-    1.11  0.070 / 0.230
G32     2.7            69.4                7.3 +/-    0.35       7.7 +/-    0.35  0.080 / 0.230