PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/22-03:43:00
G01     252.4          36.0                4.3 +/-    1.14       6.7 +/-    1.14  0.060 / 0.090
G03     316.1          40.2                4.4 +/-    0.95       6.3 +/-    0.95  0.050 / 0.090
G11     236.7          13.6                6.1 +/-    2.03      15.7 +/-    2.03  0.040 / 0.040
G14     60.1           40.3                2.9 +/-    0.57       4.2 +/-    0.57  0.040 / 0.050
G16     166.1          15.4                2.9 +/-   11.71       7.2 +/-   11.71  0.100 / 0.130
G22     306.8          64.2                3.7 +/-    1.01       4.1 +/-    1.01  0.060 / 0.130
G23     284.9          17.1                4.5 +/-    2.08      10.6 +/-    2.08  0.060 / 0.100
G26     141.5          35.5                7.9 +/-    0.79      12.5 +/-    0.79  0.060 / 0.080
G31     40.5           62.7                3.8 +/-    0.72       4.2 +/-    0.72  0.030 / 0.040
G32     74.8           26.2                3.1 +/-    1.85       6.0 +/-    1.85  0.020 / 0.040