PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/12-07:27:50
G01     127.7          11.0               -6.2 +/-   36.07     -16.9 +/-   36.07  0.040 / 0.040
G07     53.3           69.2                6.8 +/-    0.40       7.2 +/-    0.40  0.040 / 0.040
G08     49.8           38.1                3.9 +/-    0.65       5.9 +/-    0.65  0.030 / 0.030
G09     174.2          32.0                7.0 +/-    1.52      11.8 +/-    1.52  0.030 / 0.040
G11     117.4          35.2                7.6 +/-    0.62      12.1 +/-    0.62  0.180 / 0.370
G13     321.2          11.3               -8.7 +/-    9.10     -23.7 +/-    9.10  0.130 / 0.390
G17     199.0          15.9                5.9 +/-    1.11      14.4 +/-    1.11  0.090 / 0.250
G18     102.7          16.2                5.7 +/-    0.97      13.7 +/-    0.97  0.090 / 0.280
G28     273.6          51.6                6.7 +/-    0.68       8.3 +/-    0.68  0.110 / 0.450
G30     329.8          58.5                4.2 +/-    0.73       4.8 +/-    0.73  0.080 / 0.100