PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/31-11:28:30
G02     75.7           19.7                2.9 +/-    0.99       6.5 +/-    0.99  0.060 / 0.150
G05     45.0           43.1                0.9 +/-    0.47       1.3 +/-    0.47  0.050 / 0.110
G12     181.0          13.8                4.6 +/-    1.61      11.7 +/-    1.61  0.110 / 0.120
G13     109.7          27.9                6.9 +/-    1.46      12.6 +/-    1.46  0.100 / 0.150
G15     153.0          28.8                5.6 +/-    1.06      10.1 +/-    1.06  0.100 / 0.180
G20     228.4          14.5                4.4 +/-    6.19      11.0 +/-    6.19  0.090 / 0.170
G21     290.4          32.8                2.5 +/-    1.51       4.2 +/-    1.51  0.100 / 0.260
G25     210.0          32.7                5.2 +/-    0.73       8.6 +/-    0.73  0.060 / 0.330
G26     316.5          12.0                2.2 +/-    2.57       5.9 +/-    2.57  0.030 / 0.050
G29     351.0          76.9                2.1 +/-    0.38       2.2 +/-    0.38  0.030 / 0.050