PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/14-08:12:30
G02     214.0          56.9                6.9 +/-    0.54       8.1 +/-    0.54  0.050 / 0.080
G06     70.7           78.2                5.9 +/-    0.38       6.0 +/-    0.38  0.050 / 0.070
G12     317.2          32.9                3.0 +/-    1.75       4.9 +/-    1.75  0.090 / 0.080
G17     56.5           31.8                2.2 +/-    2.09       3.7 +/-    2.09  0.080 / 0.070
G19     33.0           52.7              -15.0 +/-    1.04     -18.3 +/-    1.04  0.030 / 0.020
G24     263.0          43.2                7.8 +/-    4.72      10.8 +/-    4.72  0.030 / 0.030
G28     120.0          17.6                7.0 +/-    1.42      16.4 +/-    1.42  0.110 / 0.210