PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/19-07:58:10
G02     202.1          34.8                5.1 +/-    0.96       8.2 +/-    0.96  0.050 / 0.110
G06     172.8          63.4                7.2 +/-    0.55       7.9 +/-    0.55  0.060 / 0.110
G12     306.5          12.8                2.8 +/-    2.20       7.4 +/-    2.20  0.190 / 0.190
G17     35.6           49.6                2.3 +/-    0.75       2.9 +/-    0.75  0.090 / 0.240
G19     1.5            65.5                2.6 +/-    0.59       2.8 +/-    0.59  0.060 / 0.030
G24     300.7          36.5                3.2 +/-    1.68       4.9 +/-    1.68  0.030 / 0.040
G28     101.7          31.4                5.3 +/-    0.81       9.1 +/-    0.81  0.030 / 0.020