PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/07-06:57:40
G01     123.0          13.3                5.3 +/-    1.97      13.7 +/-    1.97  0.030 / 0.040
G07     64.8           68.3                4.9 +/-    0.62       5.3 +/-    0.62  0.030 / 0.040
G08     49.3           38.6                4.9 +/-    1.30       7.3 +/-    1.30  0.120 / 0.370
G09     176.4          31.9                5.3 +/-    1.52       9.0 +/-    1.52  0.110 / 0.360
G11     117.5          37.9                6.9 +/-    0.79      10.4 +/-    0.79  0.110 / 0.250
G13     319.8          15.3                2.1 +/-    4.19       5.3 +/-    4.19  0.110 / 0.240
G17     200.1          16.3                3.8 +/-    1.82       9.1 +/-    1.82  0.090 / 0.100
G18     100.3          18.0                5.4 +/-    0.98      12.6 +/-    0.98  0.080 / 0.110
G28     272.3          48.4                6.1 +/-    2.71       7.8 +/-    2.71  0.030 / 0.050
G30     332.6          61.3                3.9 +/-    0.77       4.4 +/-    0.77  0.040 / 0.040