PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/11/22-15:42:40
G05     45.5           28.4                9.1 +/-    0.98      16.5 +/-    0.98  0.050 / 0.100
G13     93.3           35.7               14.2 +/-    1.04      22.2 +/-    1.04  0.100 / 0.170
G15     137.8          43.3               15.0 +/-    0.61      20.7 +/-    0.61  0.050 / 0.090
G18     235.5          33.7               13.6 +/-    1.10      22.1 +/-    1.10  0.040 / 0.090
G20     2.5            79.9               12.2 +/-    0.36      12.4 +/-    0.36  0.090 / 0.140
G21     304.7          42.8               11.3 +/-    1.43      15.7 +/-    1.43  0.080 / 0.150
G25     205.2          20.2               14.2 +/-    0.98      31.1 +/-    0.98  0.040 / 0.030
G26     303.0          18.1                9.1 +/-    1.39      21.0 +/-    1.39  0.030 / 0.030
G29     132.5          79.9               13.4 +/-    0.43      13.6 +/-    0.43  0.070 / 0.080