PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/06-07:57:20
G02     203.6          34.3                5.6 +/-    1.47       9.0 +/-    1.47  0.070 / 0.230
G06     161.8          68.6                6.9 +/-    0.33       7.4 +/-    0.33  0.130 / 0.270
G12     307.4          15.3                2.5 +/-    2.68       6.1 +/-    2.68  0.080 / 0.070
G17     38.6           46.7                4.6 +/-    0.97       6.1 +/-    0.97  0.090 / 0.070
G19     355.6          66.1                4.6 +/-    0.39       5.0 +/-    0.39  0.050 / 0.060
G24     293.0          41.5                7.0 +/-    2.14       9.9 +/-    2.14  0.050 / 0.050
G28     101.7          32.7                7.3 +/-    1.51      12.1 +/-    1.51  0.070 / 0.140