PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/04-18:28:00
G05     47.6           21.9                8.2 +/-    0.61      17.2 +/-    0.61  0.220 / 0.390
G10     234.8          11.1                3.4 +/-   37.96       9.2 +/-   37.96  0.210 / 0.390
G13     78.1           36.2               10.8 +/-    0.67      16.8 +/-    0.67  0.050 / 0.070
G15     134.4          50.0               13.5 +/-    0.61      17.1 +/-    0.61  0.050 / 0.080
G16     315.5          11.9                9.3 +/-    1.93      25.0 +/-    1.93  0.080 / 0.110
G20     246.2          35.3               12.1 +/-    1.15      19.1 +/-    1.15  0.070 / 0.110
G21     311.7          46.0               11.0 +/-    0.94      14.6 +/-    0.94  0.050 / 0.130
G25     198.2          11.2               12.5 +/-    2.43      34.0 +/-    2.43  0.060 / 0.120
G26     289.7          20.4               10.6 +/-    2.76      23.2 +/-    2.76  0.040 / 0.070
G29     153.0          75.2               11.4 +/-    0.54      11.8 +/-    0.54  0.030 / 0.050