PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/06-09:42:50
G02     268.5          79.9                3.5 +/-    0.46       3.5 +/-    0.46  0.030 / 0.040
G05     170.7          20.9                3.6 +/-    1.38       7.8 +/-    1.38  0.030 / 0.040
G06     39.4           53.0                2.9 +/-    0.32       3.5 +/-    0.32  0.090 / 0.200
G12     320.7          58.5                3.3 +/-    1.10       3.8 +/-    1.10  0.100 / 0.160
G17     77.5           16.0                3.8 +/-    0.98       9.2 +/-    0.98  0.060 / 0.060
G19     61.9           36.4                4.0 +/-    0.93       6.2 +/-    0.93  0.070 / 0.090
G24     233.2          29.8                4.4 +/-    1.06       7.8 +/-    1.06  0.060 / 0.170
G25     317.3          23.7                3.0 +/-    2.51       6.1 +/-    2.51  0.050 / 0.130