PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/07-10:57:50
G02     202.6          30.9                4.6 +/-    1.26       7.9 +/-    1.26  0.080 / 0.100
G06     160.0          66.6                4.8 +/-    0.45       5.2 +/-    0.45  0.080 / 0.090
G12     305.8          14.6                3.4 +/-    1.14       8.6 +/-    1.14  0.130 / 0.290
G17     31.9           52.3                4.2 +/-    1.30       5.2 +/-    1.30  0.080 / 0.260
G19     359.7          66.2                3.7 +/-    0.51       4.0 +/-    0.51  0.040 / 0.040
G24     301.7          35.3                4.0 +/-    2.28       6.4 +/-    2.28  0.050 / 0.040
G28     95.2           39.5                6.5 +/-    0.72       9.5 +/-    0.72  0.040 / 0.040