PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/13-07:57:40
G08     269.4          18.9                5.1 +/-    2.42      11.4 +/-    2.42  0.140 / 0.280
G10     59.6           58.0                5.1 +/-    0.48       5.9 +/-    0.48  0.100 / 0.160
G14     263.2          65.9                4.7 +/-    1.31       5.1 +/-    1.31  0.220 / 0.240
G18     312.9          32.0                3.5 +/-    0.75       6.0 +/-    0.75  0.150 / 0.340
G20     93.9           37.6                6.6 +/-    1.51      10.1 +/-    1.51  0.030 / 0.030
G21     154.5          16.3                5.4 +/-    2.00      13.0 +/-    2.00  0.030 / 0.020
G24     40.2           10.5                2.9 +/-    1.13       8.1 +/-    1.13  0.040 / 0.060
G27     234.2          17.6                4.6 +/-    3.45      10.7 +/-    3.45  0.040 / 0.060
G31     178.5          28.6                5.9 +/-    2.56      10.6 +/-    2.56  0.030 / 0.030
G32     316.3          74.8                5.9 +/-    0.47       6.0 +/-    0.47  0.030 / 0.040