PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/27-13:58:00
G01     62.5           30.9                6.9 +/-    0.53      11.9 +/-    0.53  0.050 / 0.040
G07     140.2          22.0                7.2 +/-    1.46      15.1 +/-    1.46  0.050 / 0.050
G11     49.6           26.9                4.7 +/-    2.11       8.8 +/-    2.11  0.060 / 0.140
G13     265.2          37.2                8.9 +/-    1.76      13.5 +/-    1.76  0.090 / 0.130
G15     296.9          16.1                6.9 +/-    1.12      16.8 +/-    1.12  0.030 / 0.040
G17     242.1          70.8                8.9 +/-    0.62       9.4 +/-    0.62  0.040 / 0.030
G18     43.6           14.3                4.2 +/-    2.58      10.5 +/-    2.58  0.090 / 0.070
G19     228.7          49.3                9.1 +/-    2.83      11.6 +/-    2.83  0.130 / 0.120
G28     18.8           60.1                9.1 +/-    0.87      10.3 +/-    0.87  0.150 / 0.390
G30     141.4          54.9                8.5 +/-    0.89      10.1 +/-    0.89  0.080 / 0.280