PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/07-20:58:00
G01     82.2           32.7               11.0 +/-    0.71      18.2 +/-    0.71  0.050 / 0.080
G07     131.0          34.2               13.1 +/-    1.27      21.1 +/-    1.27  0.040 / 0.080
G11     60.4           36.2               11.8 +/-    1.05      18.3 +/-    1.05  0.050 / 0.090
G13     286.3          38.2               15.4 +/-    1.07      23.1 +/-    1.07  0.070 / 0.110
G15     310.1          12.9                9.2 +/-    2.77      24.2 +/-    2.77  0.050 / 0.050
G17     218.9          61.0               14.3 +/-    1.09      16.0 +/-    1.09  0.040 / 0.050
G18     55.3           20.9               11.0 +/-    2.69      23.7 +/-    2.69  0.090 / 0.130
G19     217.1          33.0               12.8 +/-    1.74      21.1 +/-    1.74  0.110 / 0.110
G28     352.4          61.6               10.7 +/-    0.70      12.0 +/-    0.70  0.040 / 0.030
G30     122.0          69.9               13.7 +/-    0.69      14.5 +/-    0.69  0.040 / 0.030