PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/17-17:57:30
G08     297.2          22.4               12.3 +/-    1.43      25.6 +/-    1.43  0.050 / 0.080
G10     358.0          62.7               11.2 +/-    0.79      12.5 +/-    0.79  0.060 / 0.160
G14     227.1          43.3               17.2 +/-    0.90      23.7 +/-    0.90  0.050 / 0.090
G18     60.8           51.7               10.8 +/-    0.22      13.3 +/-    0.22  0.040 / 0.110
G21     143.4          38.4               16.4 +/-    1.27      24.4 +/-    1.27  0.040 / 0.100
G24     60.5           27.8                8.6 +/-    0.96      15.7 +/-    0.96  0.050 / 0.090
G27     256.8          33.2               14.6 +/-    1.64      24.0 +/-    1.64  0.070 / 0.100
G32     239.3          63.8               15.8 +/-    0.98      17.4 +/-    0.98  0.070 / 0.100