PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/12-04:13:00
G01     319.9          16.5              -17.7 +/-   25.45     -42.5 +/-   25.45  0.140 / 0.230
G08     263.0          15.0                7.2 +/-    1.29      17.9 +/-    1.29  0.240 / 0.360
G10     75.8           53.4                4.5 +/-    0.83       5.5 +/-    0.83  0.040 / 0.040
G11     306.0          21.2                4.5 +/-    2.36       9.7 +/-    2.36  0.040 / 0.040
G14     285.2          69.7                4.4 +/-    1.20       4.7 +/-    1.20  0.270 / 0.360
G18     307.1          38.9                2.9 +/-    1.10       4.3 +/-    1.10  0.130 / 0.280
G20     102.7          31.6                3.3 +/-    0.86       5.6 +/-    0.86  0.060 / 0.050
G27     226.8          11.3                6.6 +/-    1.58      18.0 +/-    1.58  0.070 / 0.050
G31     175.4          39.5                4.9 +/-    0.75       7.2 +/-    0.75  0.080 / 0.090
G32     356.3          70.6                4.6 +/-    0.61       4.9 +/-    0.61  0.080 / 0.090