PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/25-10:58:00
G01     60.2           30.6                4.4 +/-    1.53       7.7 +/-    1.53  0.040 / 0.040
G07     142.1          21.6                5.8 +/-    2.99      12.2 +/-    2.99  0.040 / 0.040
G11     47.7           22.7                2.3 +/-    1.31       4.8 +/-    1.31  0.050 / 0.090
G13     262.2          35.5                9.1 +/-   19.19      14.3 +/-   19.19  0.040 / 0.100
G15     298.5          14.3                2.0 +/-   20.81       5.0 +/-   20.81  0.050 / 0.150
G17     263.5          78.0                8.9 +/-   19.70       9.1 +/-   19.70  0.050 / 0.130
G19     231.5          46.0                9.4 +/-   19.64      12.5 +/-   19.64  0.040 / 0.060
G28     33.9           57.3                7.4 +/-   19.59       8.7 +/-   19.59  0.030 / 0.050
G30     144.1          54.2                6.7 +/-    1.97       8.0 +/-    1.97  0.060 / 0.130