PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-04:12:40
G01     64.6           31.8                5.1 +/-    1.51       8.5 +/-    1.51  0.040 / 0.060
G07     140.3          26.0                7.7 +/-    0.88      14.7 +/-    0.88  0.040 / 0.050
G11     51.2           27.9                3.5 +/-    1.80       6.4 +/-    1.80  0.050 / 0.120
G13     268.9          36.2                8.8 +/-    1.52      13.7 +/-    1.52  0.060 / 0.110
G15     297.0          16.6                5.8 +/-    1.46      13.9 +/-    1.46  0.090 / 0.240
G17     246.0          73.5                9.8 +/-    0.27      10.1 +/-    0.27  0.100 / 0.200
G19     228.9          48.0               11.0 +/-    2.13      14.3 +/-    2.13  0.030 / 0.030
G28     30.2           57.5                4.7 +/-    1.00       5.5 +/-    1.00  0.020 / 0.030
G30     139.9          53.3                8.4 +/-    0.38      10.2 +/-    0.38  0.050 / 0.070