PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/07-19:42:50
G01     56.6           29.0                9.8 +/-    1.26      17.6 +/-    1.26  0.050 / 0.050
G07     142.6          13.7               13.3 +/-    2.71      34.1 +/-    2.71  0.040 / 0.050
G11     46.4           20.8               10.1 +/-    2.92      21.7 +/-    2.92  0.120 / 0.290
G13     258.0          34.8               14.4 +/-    1.55      23.0 +/-    1.55  0.100 / 0.220
G15     290.2          16.6               11.4 +/-    1.07      27.3 +/-    1.07  0.050 / 0.050
G17     271.3          78.3               14.7 +/-    0.67      15.0 +/-    0.67  0.050 / 0.050
G18     39.3           9.6                 8.8 +/-    2.46      24.7 +/-    2.46  0.080 / 0.130
G19     235.2          53.9               14.2 +/-    2.05      17.1 +/-    2.05  0.080 / 0.120
G28     32.7           58.1               10.8 +/-    0.69      12.5 +/-    0.69  0.130 / 0.380
G30     145.2          47.0               13.1 +/-    1.01      17.2 +/-    1.01  0.150 / 0.310