PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/14-18:27:50
G10     247.9          24.7               10.8 +/-    3.16      21.3 +/-    3.16  0.060 / 0.060
G13     56.5           31.3                9.7 +/-    0.78      16.6 +/-    0.78  0.050 / 0.060
G15     100.5          59.4               11.3 +/-    0.47      12.9 +/-    0.47  0.130 / 0.590
G16     298.8          15.6                7.2 +/-    2.20      17.7 +/-    2.20  0.180 / 0.700
G20     265.6          48.7               11.2 +/-    1.98      14.3 +/-    1.98  0.050 / 0.150
G21     331.1          58.4                8.3 +/-    0.74       9.6 +/-    0.74  0.060 / 0.140
G26     271.5          16.7               10.6 +/-    1.89      25.4 +/-    1.89  0.040 / 0.040
G29     163.4          53.8               11.1 +/-    1.85      13.4 +/-    1.85  0.040 / 0.040