PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/16-14:27:50
G01     65.6           31.8                8.1 +/-    0.74      13.6 +/-    0.74  0.060 / 0.130
G06     181.5          10.5              -13.8 +/-   35.00     -38.0 +/-   35.00  0.050 / 0.130
G07     139.5          24.1                9.4 +/-    1.07      18.8 +/-    1.07  0.040 / 0.040
G11     50.1           25.1                4.6 +/-    1.67       9.0 +/-    1.67  0.030 / 0.050
G13     271.5          36.2                8.8 +/-    1.62      13.6 +/-    1.62  0.050 / 0.110
G15     301.2          15.1                4.0 +/-    2.03       9.8 +/-    2.03  0.040 / 0.110
G17     246.4          75.4                9.7 +/-    0.68      10.0 +/-    0.68  0.050 / 0.080
G19     228.0          48.1              -53.1 +/-   48.49     -68.6 +/-   48.49  0.050 / 0.080
G28     27.4           58.0                2.7 +/-    2.88       3.1 +/-    2.88  0.030 / 0.030
G30     139.0          59.8               10.0 +/-    0.72      11.4 +/-    0.72  0.030 / 0.030