PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-15:28:00
G01     319.1          17.7                6.3 +/-    1.66      14.8 +/-    1.66  0.100 / 0.240
G08     259.9          13.2                6.7 +/-    3.89      17.5 +/-    3.89  0.100 / 0.220
G10     79.1           53.7                6.7 +/-    0.90       8.1 +/-    0.90  0.050 / 0.060
G11     305.4          21.2                6.5 +/-    1.86      13.9 +/-    1.86  0.050 / 0.040
G14     292.8          69.7                7.6 +/-    0.45       8.1 +/-    0.45  0.030 / 0.040
G22     300.8          11.5                3.0 +/-    6.18       8.0 +/-    6.18  0.040 / 0.030
G31     175.7          42.3                9.6 +/-    1.16      13.4 +/-    1.16  0.040 / 0.020
G32     8.5            67.2                6.3 +/-    0.31       6.8 +/-    0.31  0.030 / 0.030