PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/27-14:58:10
G01     96.6           29.3                8.1 +/-    0.94      14.3 +/-    0.94  0.040 / 0.060
G07     120.1          46.5                9.1 +/-    0.53      12.0 +/-    0.53  0.040 / 0.060
G08     41.8           14.4                5.5 +/-    1.78      14.0 +/-    1.78  0.060 / 0.050
G11     75.8           42.4                7.3 +/-    0.95      10.2 +/-    0.95  0.060 / 0.070
G13     300.8          34.6               10.4 +/-    1.81      16.7 +/-    1.81  0.040 / 0.080
G17     209.8          44.9                9.3 +/-    0.61      12.6 +/-    0.61  0.040 / 0.090
G18     69.3           24.3                7.1 +/-    0.45      14.1 +/-    0.45  0.070 / 0.100
G19     211.1          22.3                9.3 +/-    1.15      19.4 +/-    1.15  0.070 / 0.120
G28     323.9          60.6                8.7 +/-    0.68       9.8 +/-    0.68  0.050 / 0.080
G30     84.6           77.9                8.0 +/-    0.64       8.2 +/-    0.64  0.050 / 0.080