PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-20:43:00
G07     60.7           67.3               10.9 +/-    0.64      11.7 +/-    0.64  0.040 / 0.040
G08     50.9           39.4                9.8 +/-    1.46      14.4 +/-    1.46  0.030 / 0.040
G09     178.7          38.8               12.6 +/-    0.82      18.8 +/-    0.82  0.060 / 0.070
G11     118.3          35.0               11.1 +/-    0.76      17.5 +/-    0.76  0.060 / 0.070
G17     198.8          14.5               17.6 +/-    2.24      44.2 +/-    2.24  0.070 / 0.340
G18     102.2          15.8               10.5 +/-    1.85      25.5 +/-    1.85  0.080 / 0.290
G23     161.0          10.2               13.4 +/-    3.49      37.2 +/-    3.49  0.050 / 0.060
G27     37.8           10.4                7.8 +/-    4.05      21.7 +/-    4.05  0.040 / 0.050
G28     269.6          49.0               10.0 +/-    3.47      12.8 +/-    3.47  0.130 / 0.070
G30     331.4          59.7                9.7 +/-    0.49      11.1 +/-    0.49  0.090 / 0.090