PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/22-07:57:40
G01     123.6          12.9                3.1 +/-    1.98       8.2 +/-    1.98  0.030 / 0.040
G07     64.0           68.2                5.0 +/-    0.41       5.3 +/-    0.41  0.030 / 0.040
G08     50.1           39.9                3.5 +/-    1.39       5.1 +/-    1.39  0.030 / 0.040
G09     176.9          33.1                7.2 +/-    1.27      11.8 +/-    1.27  0.030 / 0.040
G11     117.7          37.5                6.7 +/-    0.72      10.2 +/-    0.72  0.140 / 0.260
G13     320.0          14.7                0.6 +/-    2.32       1.5 +/-    2.32  0.090 / 0.190
G17     200.2          15.1                3.6 +/-    3.47       8.9 +/-    3.47  0.120 / 0.510
G18     100.9          17.7                5.0 +/-    2.05      11.5 +/-    2.05  0.120 / 0.500
G28     271.7          48.3                5.7 +/-    0.66       7.4 +/-    0.66  0.090 / 0.110
G30     332.7          61.2                4.3 +/-    0.71       4.9 +/-    0.71  0.070 / 0.070