PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/06-19:42:50
G01     58.5           29.7               13.3 +/-    1.72      23.4 +/-    1.72  0.050 / 0.040
G07     141.9          15.3               14.1 +/-    3.31      34.8 +/-    3.31  0.050 / 0.050
G11     47.1           22.3               12.6 +/-    3.31      26.2 +/-    3.31  0.210 / 0.330
G13     260.2          35.6               15.6 +/-    1.28      24.6 +/-    1.28  0.100 / 0.360
G15     292.0          16.6               10.7 +/-    1.92      25.6 +/-    1.92  0.060 / 0.040
G17     262.6          77.4               15.4 +/-    0.66      15.7 +/-    0.66  0.050 / 0.040
G18     40.4           10.9               11.5 +/-    2.61      31.4 +/-    2.61  0.170 / 0.330
G19     233.1          52.2               15.5 +/-    2.04      19.0 +/-    2.04  0.130 / 0.390
G28     29.5           58.6               12.7 +/-    0.72      14.5 +/-    0.72  0.070 / 0.110
G30     144.0          49.0               14.2 +/-    0.50      18.1 +/-    0.50  0.080 / 0.120