PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/07-12:27:50
G08     269.5          19.8                5.2 +/-    2.04      11.5 +/-    2.04  0.150 / 0.390
G10     55.6           59.0                6.3 +/-    0.81       7.2 +/-    0.81  0.190 / 0.430
G14     259.7          65.0                7.7 +/-    0.47       8.4 +/-    0.47  0.040 / 0.050
G18     313.2          31.7                4.4 +/-    1.34       7.5 +/-    1.34  0.060 / 0.050
G20     92.0           38.7                6.6 +/-    1.68       9.8 +/-    1.68  0.030 / 0.020
G21     153.3          15.4                6.4 +/-    1.47      15.7 +/-    1.47  0.030 / 0.030
G24     40.3           10.7                2.6 +/-    2.46       7.2 +/-    2.46  0.030 / 0.020
G27     236.6          19.0                5.6 +/-    3.72      12.7 +/-    3.72  0.030 / 0.020
G31     180.7          24.5                4.9 +/-    1.59       9.7 +/-    1.59  0.140 / 0.220
G32     308.0          74.9                6.6 +/-    0.60       6.8 +/-    0.60  0.120 / 0.190