PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/22-19:12:50
G02     24.5           62.3               12.3 +/-    0.79      13.7 +/-    0.79  0.030 / 0.030
G05     156.1          54.0               13.5 +/-    1.20      16.2 +/-    1.20  0.030 / 0.040
G06     50.9           20.6                8.0 +/-    0.69      17.4 +/-    0.69  0.050 / 0.050
G12     209.1          73.6               11.5 +/-    0.75      11.9 +/-    0.75  0.040 / 0.070
G19     96.3           11.7               10.4 +/-    1.12      28.0 +/-    1.12  0.030 / 0.040
G20     197.4          21.3               14.9 +/-    1.96      31.7 +/-    1.96  0.030 / 0.050
G25     301.2          53.3               11.8 +/-    0.69      14.3 +/-    0.69  0.080 / 0.130
G29     304.4          25.9               10.7 +/-    1.56      20.4 +/-    1.56  0.060 / 0.150