PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/11-14:58:30
G01     65.0           31.5                6.1 +/-    1.14      10.4 +/-    1.14  0.040 / 0.050
G07     139.2          23.4                7.3 +/-    2.87      14.8 +/-    2.87  0.040 / 0.050
G11     50.6           28.1                5.9 +/-    1.92      10.7 +/-    1.92  0.100 / 0.180
G13     267.9          37.7                6.8 +/-    3.59      10.3 +/-    3.59  0.170 / 0.230
G15     298.5          16.0                5.1 +/-    1.97      12.3 +/-    1.97  0.090 / 0.130
G17     238.3          69.9                8.0 +/-    0.36       8.4 +/-    0.36  0.090 / 0.120
G19     226.7          47.2                8.6 +/-    2.20      11.2 +/-    2.20  0.030 / 0.040
G28     15.5           60.4                7.0 +/-    1.46       7.9 +/-    1.46  0.030 / 0.040
G30     139.6          56.1                8.4 +/-    0.72       9.9 +/-    0.72  0.130 / 0.090