PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/20-00:43:00
G10     289.3          48.4                8.8 +/-    4.04      11.4 +/-    4.04  0.070 / 0.100
G15     47.6           34.3               10.3 +/-    1.15      16.6 +/-    1.15  0.080 / 0.170
G18     343.7          66.7                9.7 +/-    0.62      10.4 +/-    0.62  0.100 / 0.130
G20     68.2           20.4               10.7 +/-    1.12      23.3 +/-    1.12  0.090 / 0.130
G21     78.1           76.2               10.9 +/-    0.79      11.2 +/-    0.79  0.040 / 0.030
G24     104.4          24.3               11.5 +/-    1.45      22.9 +/-    1.45  0.040 / 0.040
G27     304.1          32.8               10.1 +/-    2.80      16.7 +/-    2.80  0.050 / 0.080
G32     209.2          25.6               13.7 +/-    0.91      26.4 +/-    0.91  0.060 / 0.080