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               19.9 +/-    0.93      34.9 +/-    0.93  0.040 / 0.040
G06     180.1          11.9               -2.2 +/-   30.80      -5.9 +/-   30.80  0.030 / 0.030
G07     140.4          25.7                7.9 +/-    1.35      15.3 +/-    1.35  0.140 / 0.170
G11     51.3           30.5                5.8 +/-    0.91      10.1 +/-    0.91  0.110 / 0.130
G13     264.7          37.4                8.4 +/-    2.50      12.8 +/-    2.50  0.120 / 0.120
G15     293.7          17.4                5.6 +/-    0.65      13.2 +/-    0.65  0.130 / 0.130
G17     247.0          75.4               10.6 +/-    0.44      10.9 +/-    0.44  0.060 / 0.050
G19     228.5          50.3               10.2 +/-    2.62      12.9 +/-    2.62  0.050 / 0.040
G28     13.3           60.9                6.0 +/-    1.67       6.8 +/-    1.67  0.090 / 0.100
G30     142.5          60.1                9.9 +/-    1.16      11.2 +/-    1.16  0.070 / 0.140