PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/15-20:12:40
G05     52.3           11.2                8.7 +/-    1.17      23.7 +/-    1.17  0.120 / 0.300
G10     243.1          20.2               11.6 +/-    1.04      25.4 +/-    1.04  0.150 / 0.310
G13     63.1           34.0                8.8 +/-    0.92      14.2 +/-    0.92  0.060 / 0.070
G15     116.8          57.8                9.4 +/-    0.58      10.9 +/-    0.58  0.050 / 0.060
G16     304.3          15.3                5.6 +/-    3.17      13.9 +/-    3.17  0.130 / 0.580
G20     258.2          44.3                8.5 +/-    1.05      11.6 +/-    1.05  0.160 / 0.650
G21     323.2          53.6               11.1 +/-    1.44      13.5 +/-    1.44  0.090 / 0.140
G26     276.7          18.7                8.6 +/-    1.57      19.5 +/-    1.57  0.100 / 0.170
G29     161.6          61.4               11.7 +/-    0.57      13.1 +/-    0.57  0.040 / 0.050