PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-02:13:00
G01     123.1          12.6                8.0 +/-    2.25      21.0 +/-    2.25  0.030 / 0.040
G07     57.2           69.5                5.3 +/-    0.61       5.6 +/-    0.61  0.030 / 0.030
G08     48.6           36.8                4.4 +/-    0.73       6.7 +/-    0.73  0.050 / 0.060
G09     174.0          30.0                7.9 +/-    1.16      13.8 +/-    1.16  0.070 / 0.080
G11     121.5          37.2                7.2 +/-    0.65      10.9 +/-    0.65  0.060 / 0.090
G13     320.1          14.5                2.2 +/-    2.71       5.6 +/-    2.71  0.100 / 0.110
G17     199.1          17.1                5.3 +/-    1.27      12.5 +/-    1.27  0.070 / 0.110
G28     269.5          46.6                4.4 +/-    3.06       5.7 +/-    3.06  0.070 / 0.110
G30     329.0          58.7                4.2 +/-    0.41       4.8 +/-    0.41  0.160 / 0.320