PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/10-21:27:50
G01     59.3           30.1               11.4 +/-    1.05      20.0 +/-    1.05  0.040 / 0.050
G07     141.7          16.6               14.9 +/-    1.61      35.6 +/-    1.61  0.050 / 0.050
G11     47.3           22.6                9.4 +/-    1.97      19.5 +/-    1.97  0.070 / 0.130
G13     261.2          35.8               14.1 +/-    1.56      22.1 +/-    1.56  0.140 / 0.180
G15     292.7          16.6                9.1 +/-    1.34      21.7 +/-    1.34  0.040 / 0.040
G17     262.3          77.8               11.8 +/-    0.49      12.0 +/-    0.49  0.040 / 0.050
G18     40.5           10.9                7.7 +/-    3.41      21.0 +/-    3.41  0.090 / 0.080
G19     232.3          51.2               12.9 +/-    2.27      16.0 +/-    2.27  0.100 / 0.070
G28     29.1           58.6               10.5 +/-    0.79      12.1 +/-    0.79  0.070 / 0.080
G30     143.8          50.7               15.1 +/-    0.41      18.9 +/-    0.41  0.090 / 0.080