PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/08-14:12:50
G01     97.0           29.1                8.3 +/-    1.17      14.9 +/-    1.17  0.040 / 0.050
G07     119.5          47.2                7.5 +/-    0.99       9.8 +/-    0.99  0.040 / 0.050
G08     41.8           15.3                6.1 +/-    2.15      15.1 +/-    2.15  0.040 / 0.070
G11     76.6           42.7                6.8 +/-    1.34       9.5 +/-    1.34  0.060 / 0.060
G13     301.3          34.4                7.6 +/-    0.56      12.2 +/-    0.56  0.030 / 0.040
G17     209.6          43.9                9.4 +/-    0.98      12.9 +/-    0.98  0.040 / 0.040
G18     69.8           24.4                7.0 +/-    1.38      14.0 +/-    1.38  0.040 / 0.060
G19     210.8          22.0                7.9 +/-    1.62      16.7 +/-    1.62  0.040 / 0.050
G28     322.6          60.5                7.7 +/-    0.99       8.7 +/-    0.99  0.090 / 0.130
G30     80.1           78.5                9.0 +/-    0.51       9.2 +/-    0.51  0.080 / 0.120