PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-13:13:10
G05     49.4           16.1                1.4 +/-    0.77       3.4 +/-    0.77  0.050 / 0.080
G10     237.5          14.7                2.3 +/-    5.21       5.9 +/-    5.21  0.060 / 0.070
G13     72.5           35.7                4.7 +/-    1.05       7.3 +/-    1.05  0.050 / 0.110
G15     122.5          53.7                6.4 +/-    0.39       7.7 +/-    0.39  0.050 / 0.100
G16     313.8          12.1                1.8 +/-    3.57       4.9 +/-    3.57  0.130 / 0.250
G20     250.3          38.7                5.4 +/-    0.96       8.1 +/-    0.96  0.160 / 0.220
G21     318.9          51.2                3.5 +/-    0.68       4.4 +/-    0.68  0.120 / 0.160
G26     288.2          19.1                2.9 +/-    1.65       6.4 +/-    1.65  0.090 / 0.230
G29     154.6          67.9                6.1 +/-    0.82       6.6 +/-    0.82  0.040 / 0.050