PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-07:12:30
G02     201.0          23.3                5.9 +/-    1.23      11.9 +/-    1.23  0.040 / 0.040
G06     170.9          56.2                9.2 +/-    1.18      10.8 +/-    1.18  0.050 / 0.040
G13     224.4          11.1                4.2 +/-    2.15      11.4 +/-    2.15  0.150 / 0.340
G17     28.6           55.1                4.0 +/-    0.54       4.7 +/-    0.54  0.140 / 0.360
G19     325.0          70.2                5.4 +/-    0.58       5.7 +/-    0.58  0.080 / 0.100
G24     304.7          35.6                3.9 +/-    1.21       6.1 +/-    1.21  0.080 / 0.100
G28     90.0           39.6                7.4 +/-    0.53      10.8 +/-    0.53  0.100 / 0.250
G30     157.9          12.9                7.3 +/-    2.11      19.1 +/-    2.11  0.090 / 0.330