PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/24-21:58:00
G01     320.5          14.0               -7.0 +/-   36.45     -17.8 +/-   36.45  0.150 / 0.420
G08     259.8          15.6               12.2 +/-    1.88      30.0 +/-    1.88  0.150 / 0.430
G10     72.4           55.3               11.1 +/-    0.47      13.2 +/-    0.47  0.120 / 0.240
G11     306.3          21.5                9.2 +/-    2.04      19.4 +/-    2.04  0.130 / 0.320
G14     282.1          69.3               13.3 +/-    0.66      14.1 +/-    0.66  0.040 / 0.050
G18     307.7          38.4               12.0 +/-    1.53      17.9 +/-    1.53  0.040 / 0.050
G20     101.1          32.4               13.6 +/-    1.08      22.7 +/-    1.08  0.070 / 0.270
G27     228.8          12.3               12.8 +/-    5.40      34.0 +/-    5.40  0.080 / 0.230
G31     177.8          36.0               14.8 +/-    2.01      23.0 +/-    2.01  0.140 / 0.330
G32     358.1          70.6               12.2 +/-    0.83      12.8 +/-    0.83  0.130 / 0.320