PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/13-04:28:10
G01     61.2           30.0               18.2 +/-    0.94      31.9 +/-    0.94  0.030 / 0.040
G06     180.1          11.9                2.2 +/-   22.20       5.8 +/-   22.20  0.040 / 0.040
G07     140.4          25.7                9.5 +/-    0.88      18.3 +/-    0.88  0.070 / 0.140
G11     51.3           30.5                5.5 +/-    0.55       9.5 +/-    0.55  0.060 / 0.150
G13     264.7          37.4                9.9 +/-    1.13      15.0 +/-    1.13  0.050 / 0.120
G15     293.7          17.4                3.9 +/-    1.61       9.1 +/-    1.61  0.050 / 0.100
G17     247.0          75.4               10.5 +/-    0.53      10.8 +/-    0.53  0.060 / 0.120
G19     228.5          50.3               10.9 +/-    0.66      13.7 +/-    0.66  0.050 / 0.120
G28     13.3           60.9                6.6 +/-    0.68       7.4 +/-    0.68  0.040 / 0.050
G30     142.5          60.1               11.0 +/-    1.22      12.5 +/-    1.22  0.040 / 0.070