PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/12/16-05:27:50
G01     37.5           10.6                2.8 +/-    3.81       7.8 +/-    3.81  0.090 / 0.160
G02     198.4          14.4                5.4 +/-    3.76      13.7 +/-    3.76  0.100 / 0.150
G06     172.6          44.2                6.7 +/-    0.85       9.1 +/-    0.85  0.300 / 0.490
G13     232.0          19.3                4.4 +/-    4.04       9.9 +/-    4.04  0.250 / 0.360
G17     12.6           66.1                4.9 +/-    0.66       5.4 +/-    0.66  0.040 / 0.060
G19     298.7          72.4                6.4 +/-    0.38       6.6 +/-    0.38  0.040 / 0.070
G24     314.9          21.9                2.9 +/-    1.82       6.2 +/-    1.82  0.030 / 0.030
G28     68.9           51.3                6.1 +/-    2.21       7.5 +/-    2.21  0.040 / 0.030
G30     157.1          26.6                6.3 +/-    1.64      11.8 +/-    1.64  0.030 / 0.030