PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/07-18:13:00
G08     308.1          19.5                7.0 +/-    0.86      15.5 +/-    0.86  0.070 / 0.060
G10     333.6          60.2                7.0 +/-    0.39       8.0 +/-    0.39  0.070 / 0.070
G14     219.1          32.6               11.3 +/-    2.13      18.8 +/-    2.13  0.040 / 0.060
G18     43.8           57.7                9.6 +/-    0.50      11.1 +/-    0.50  0.060 / 0.060
G21     135.5          50.1               11.3 +/-    0.85      14.2 +/-    0.85  0.080 / 0.090
G24     73.5           30.4                8.9 +/-    1.04      15.5 +/-    1.04  0.120 / 0.110
G27     271.1          37.3               10.1 +/-    2.67      15.4 +/-    2.67  0.040 / 0.050
G32     224.9          52.6               11.8 +/-    2.25      14.4 +/-    2.25  0.040 / 0.040