PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/07-18:12:30
G02     219.3          60.3               14.2 +/-    1.40      16.1 +/-    1.40  0.080 / 0.060
G06     50.7           71.0               13.2 +/-    0.42      13.8 +/-    0.42  0.060 / 0.050
G12     320.1          40.5               11.8 +/-    0.96      17.1 +/-    0.96  0.060 / 0.110
G17     62.4           27.7               10.8 +/-    1.55      19.9 +/-    1.55  0.070 / 0.070
G19     46.1           45.0               10.9 +/-    1.06      14.6 +/-    1.06  0.050 / 0.070
G24     262.9          40.6               11.7 +/-    2.40      16.8 +/-    2.40  0.040 / 0.070
G28     125.5          10.4               11.9 +/-    2.60      32.8 +/-    2.60  0.050 / 0.080