PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/07/25-15:57:40
G01     65.5           31.8               11.2 +/-    0.75      19.0 +/-    0.75  0.070 / 0.130
G06     181.2          10.8               -5.5 +/-   44.03     -15.0 +/-   44.03  0.050 / 0.120
G07     139.5          23.6               12.3 +/-    1.18      24.8 +/-    1.18  0.030 / 0.040
G11     49.9           24.7                7.6 +/-    1.69      15.0 +/-    1.69  0.030 / 0.050
G13     271.2          36.2               13.2 +/-    1.35      20.4 +/-    1.35  0.060 / 0.160
G15     302.1          14.6                7.6 +/-    2.06      19.1 +/-    2.06  0.080 / 0.160
G17     246.4          75.4               13.5 +/-    0.53      14.0 +/-    0.53  0.030 / 0.040
G19     228.0          48.2              -34.4 +/-   61.99     -44.4 +/-   61.99  0.030 / 0.030
G28     27.1           58.1                9.1 +/-    2.71      10.5 +/-    2.71  0.050 / 0.070
G30     139.0          60.1               14.1 +/-    0.88      16.0 +/-    0.88  0.040 / 0.080