PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/06/23-15:43:10
G01     81.0           32.6               10.0 +/-    0.60      16.6 +/-    0.60  0.050 / 0.080
G07     131.3          34.8               11.2 +/-    0.79      17.8 +/-    0.79  0.050 / 0.080
G11     60.5           36.8                8.5 +/-    0.74      13.0 +/-    0.74  0.050 / 0.070
G13     285.3          38.5               10.6 +/-    1.28      15.8 +/-    1.28  0.050 / 0.060
G15     309.8          13.0                9.4 +/-    1.40      24.6 +/-    1.40  0.040 / 0.090
G17     219.5          58.4               12.8 +/-    0.64      14.7 +/-    0.64  0.050 / 0.110
G18     55.8           21.5                7.8 +/-    0.68      16.7 +/-    0.68  0.080 / 0.130
G19     217.2          34.6               12.5 +/-    1.50      20.0 +/-    1.50  0.080 / 0.130
G28     350.4          61.6                8.8 +/-    0.69       9.9 +/-    0.69  0.030 / 0.060
G30     123.8          67.8               10.8 +/-    0.47      11.5 +/-    0.47  0.030 / 0.050