PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/22-01:28:00
G10     253.1          27.8               12.6 +/-    2.12      23.1 +/-    2.12  0.060 / 0.270
G13     51.8           29.5                9.8 +/-    1.52      17.3 +/-    1.52  0.080 / 0.290
G15     85.4           58.3               11.2 +/-    0.81      12.9 +/-    0.81  0.080 / 0.150
G16     294.1          14.5                8.3 +/-    1.14      20.9 +/-    1.14  0.060 / 0.110
G18     272.0          56.4               10.1 +/-    1.39      11.9 +/-    1.39  0.040 / 0.040
G20     45.7           44.6                8.9 +/-    0.68      12.1 +/-    0.68  0.030 / 0.040
G21     336.7          62.2               11.0 +/-    0.43      12.3 +/-    0.43  0.180 / 0.420
G26     266.5          14.4               12.4 +/-    2.83      31.3 +/-    2.83  0.100 / 0.380
G29     165.1          44.8               13.2 +/-    0.56      17.8 +/-    0.56  0.040 / 0.050