PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-04:42:30
G01     88.3           32.1                6.7 +/-    0.63      11.2 +/-    0.63  0.050 / 0.060
G07     127.2          41.9                8.9 +/-    1.39      12.5 +/-    1.39  0.040 / 0.080
G11     65.0           38.2                5.9 +/-    0.67       8.9 +/-    0.67  0.090 / 0.110
G13     292.4          36.9                6.2 +/-    1.28       9.5 +/-    1.28  0.090 / 0.140
G17     214.7          58.1                8.1 +/-    0.98       9.4 +/-    0.98  0.070 / 0.190
G18     59.1           21.8                2.5 +/-    0.78       5.4 +/-    0.78  0.070 / 0.260
G19     215.2          26.4                6.3 +/-    2.66      11.8 +/-    2.66  0.120 / 0.110
G28     347.5          61.7                5.3 +/-    0.87       5.9 +/-    0.87  0.120 / 0.110
G30     106.9          76.5                7.5 +/-    0.64       7.7 +/-    0.64  0.030 / 0.040