PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/15-04:28:10
G01     57.2           28.6                3.7 +/-    1.03       6.7 +/-    1.03  0.040 / 0.030
G06     179.2          15.2                6.9 +/-    1.08      17.2 +/-    1.08  0.040 / 0.040
G07     142.1          22.2                9.6 +/-    1.46      19.9 +/-    1.46  0.080 / 0.140
G11     49.3           27.6                2.3 +/-    2.07       4.2 +/-    2.07  0.080 / 0.140
G13     260.0          36.1                6.4 +/-    2.55      10.0 +/-    2.55  0.080 / 0.070
G15     290.0          17.4                2.5 +/-    1.76       5.8 +/-    1.76  0.070 / 0.060
G17     261.7          78.0                7.2 +/-    0.99       7.4 +/-    0.99  0.040 / 0.050
G19     232.5          53.8                6.5 +/-    2.07       7.8 +/-    2.07  0.050 / 0.040
G28     20.4           60.3                2.6 +/-    0.82       2.9 +/-    0.82  0.120 / 0.170
G30     145.4          56.2                8.8 +/-    0.47      10.4 +/-    0.47  0.120 / 0.200