PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/12-08:27:50
G01     69.6           32.0                4.7 +/-    0.87       7.9 +/-    0.87  0.040 / 0.030
G07     136.7          30.5                6.1 +/-    1.98      10.6 +/-    1.98  0.040 / 0.040
G11     54.8           33.6                4.8 +/-    0.85       7.8 +/-    0.85  0.100 / 0.250
G13     273.8          38.8                8.1 +/-    0.87      12.0 +/-    0.87  0.160 / 0.300
G15     302.4          15.4                2.5 +/-    1.49       6.1 +/-    1.49  0.100 / 0.080
G17     230.0          67.4                7.4 +/-    0.70       7.9 +/-    0.70  0.110 / 0.090
G19     222.7          43.7                8.2 +/-    2.28      11.3 +/-    2.28  0.110 / 0.090
G28     2.6            61.3                4.1 +/-    0.64       4.6 +/-    0.64  0.120 / 0.100
G30     135.3          65.2                7.3 +/-    0.69       8.0 +/-    0.69  0.040 / 0.050