PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/16-13:58:00
G01     87.4           31.6                8.0 +/-    1.33      13.6 +/-    1.33  0.090 / 0.110
G07     127.1          40.4                8.8 +/-    0.86      12.7 +/-    0.86  0.250 / 0.150
G11     66.6           39.9                7.9 +/-    1.68      11.5 +/-    1.68  0.050 / 0.050
G13     292.1          37.5               12.5 +/-    1.55      19.0 +/-    1.55  0.080 / 0.050
G15     314.3          10.6               -6.3 +/-   15.41     -17.5 +/-   15.41  0.080 / 0.100
G17     214.9          51.8               10.6 +/-    0.79      13.1 +/-    0.79  0.310 / 0.150
G18     61.3           23.2                6.6 +/-    1.85      13.5 +/-    1.85  0.060 / 0.070
G19     214.3          29.7               10.1 +/-    2.95      17.7 +/-    2.95  0.150 / 0.110
G28     338.5          61.4                7.2 +/-    0.65       8.0 +/-    0.65  0.030 / 0.070
G30     111.0          73.9                9.2 +/-    0.56       9.5 +/-    0.56  0.090 / 0.110